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xml:lang="en-US">C000261790</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000261790Member" xlink:to="label_C000261790Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_C000261797Member" xlink:label="C000261797Member"/><link:label xlink:type="resource" xlink:label="label_C000261797Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000261797</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000261797Member" xlink:to="label_C000261797Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_C000261791Member" xlink:label="C000261791Member"/><link:label xlink:type="resource" xlink:label="label_C000261791Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000261791</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000261791Member" xlink:to="label_C000261791Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_C000261792Member" xlink:label="C000261792Member"/><link:label xlink:type="resource" xlink:label="label_C000261792Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000261792</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000261792Member" xlink:to="label_C000261792Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_C000261789Member" xlink:label="C000261789Member"/><link:label xlink:type="resource" xlink:label="label_C000261789Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000261789</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000261789Member" xlink:to="label_C000261789Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_C000261793Member" xlink:label="C000261793Member"/><link:label xlink:type="resource" xlink:label="label_C000261793Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000261793</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000261793Member" xlink:to="label_C000261793Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_C000271317Member" xlink:label="C000271317Member"/><link:label xlink:type="resource" xlink:label="label_C000271317Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000271317</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000271317Member" xlink:to="label_C000271317Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A1Minus3YearsCTIMember" xlink:label="A1Minus3YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A1Minus3YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">1-3 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A1Minus3YearsCTIMember" xlink:to="label_A1Minus3YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A3Minus5YearsCTIMember" xlink:label="A3Minus5YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A3Minus5YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">3-5 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A3Minus5YearsCTIMember" xlink:to="label_A3Minus5YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A0Minus1YearCTIMember" xlink:label="A0Minus1YearCTIMember"/><link:label xlink:type="resource" xlink:label="label_A0Minus1YearCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">0-1 Year</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A0Minus1YearCTIMember" xlink:to="label_A0Minus1YearCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A5Minus10YearsCTIMember" xlink:label="A5Minus10YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A5Minus10YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">5-10 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A5Minus10YearsCTIMember" xlink:to="label_A5Minus10YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A10Minus20YearsCTIMember" xlink:label="A10Minus20YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A10Minus20YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">10-20 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A10Minus20YearsCTIMember" xlink:to="label_A10Minus20YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A20PlusYearsCTIMember" xlink:label="A20PlusYearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A20PlusYearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">20+ Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A20PlusYearsCTIMember" xlink:to="label_A20PlusYearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_CashandorDerivativesCTIMember" xlink:label="CashandorDerivativesCTIMember"/><link:label xlink:type="resource" xlink:label="label_CashandorDerivativesCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Cash/and or Derivatives</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashandorDerivativesCTIMember" xlink:to="label_CashandorDerivativesCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_FloridaCTIMember" xlink:label="FloridaCTIMember"/><link:label xlink:type="resource" xlink:label="label_FloridaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Florida</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FloridaCTIMember" xlink:to="label_FloridaCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_WashingtonCTIMember" xlink:label="WashingtonCTIMember"/><link:label xlink:type="resource" xlink:label="label_WashingtonCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Washington</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WashingtonCTIMember" xlink:to="label_WashingtonCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_TexasCTIMember" xlink:label="TexasCTIMember"/><link:label xlink:type="resource" xlink:label="label_TexasCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Texas</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TexasCTIMember" xlink:to="label_TexasCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_WisconsinCTIMember" xlink:label="WisconsinCTIMember"/><link:label xlink:type="resource" xlink:label="label_WisconsinCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Wisconsin</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WisconsinCTIMember" xlink:to="label_WisconsinCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_TennesseeCTIMember" xlink:label="TennesseeCTIMember"/><link:label xlink:type="resource" xlink:label="label_TennesseeCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Tennessee</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TennesseeCTIMember" xlink:to="label_TennesseeCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_IndianaCTIMember" xlink:label="IndianaCTIMember"/><link:label xlink:type="resource" xlink:label="label_IndianaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Indiana</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndianaCTIMember" xlink:to="label_IndianaCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_UtahCTIMember" xlink:label="UtahCTIMember"/><link:label xlink:type="resource" xlink:label="label_UtahCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Utah</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UtahCTIMember" xlink:to="label_UtahCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_KansasCTIMember" xlink:label="KansasCTIMember"/><link:label xlink:type="resource" xlink:label="label_KansasCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Kansas</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KansasCTIMember" xlink:to="label_KansasCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_IllinoisCTIMember" xlink:label="IllinoisCTIMember"/><link:label xlink:type="resource" xlink:label="label_IllinoisCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Illinois</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IllinoisCTIMember" xlink:to="label_IllinoisCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_OhioCTIMember" xlink:label="OhioCTIMember"/><link:label xlink:type="resource" xlink:label="label_OhioCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Ohio</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OhioCTIMember" xlink:to="label_OhioCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A00364043056824299822267784280CTIMember" xlink:label="A00364043056824299822267784280CTIMember"/><link:label xlink:type="resource" xlink:label="label_A00364043056824299822267784280CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">0.0364043056824299822267784280</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A00364043056824299822267784280CTIMember" xlink:to="label_A00364043056824299822267784280CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_DistrictofColumbiaCTIMember" xlink:label="DistrictofColumbiaCTIMember"/><link:label xlink:type="resource" xlink:label="label_DistrictofColumbiaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">District of Columbia</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DistrictofColumbiaCTIMember" xlink:to="label_DistrictofColumbiaCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_MichiganCTIMember" xlink:label="MichiganCTIMember"/><link:label xlink:type="resource" xlink:label="label_MichiganCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Michigan</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MichiganCTIMember" xlink:to="label_MichiganCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_NevadaCTIMember" xlink:label="NevadaCTIMember"/><link:label xlink:type="resource" xlink:label="label_NevadaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Nevada</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NevadaCTIMember" xlink:to="label_NevadaCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_NewMexicoCTIMember" xlink:label="NewMexicoCTIMember"/><link:label xlink:type="resource" xlink:label="label_NewMexicoCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">New Mexico</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewMexicoCTIMember" xlink:to="label_NewMexicoCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A00250903464843412645867037543CTIMember" xlink:label="A00250903464843412645867037543CTIMember"/><link:label xlink:type="resource" xlink:label="label_A00250903464843412645867037543CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">0.0250903464843412645867037543</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A00250903464843412645867037543CTIMember" xlink:to="label_A00250903464843412645867037543CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_NewYorkCTIMember" xlink:label="NewYorkCTIMember"/><link:label xlink:type="resource" xlink:label="label_NewYorkCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">New York</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewYorkCTIMember" xlink:to="label_NewYorkCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_NewJerseyCTIMember" xlink:label="NewJerseyCTIMember"/><link:label xlink:type="resource" xlink:label="label_NewJerseyCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">New Jersey</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewJerseyCTIMember" xlink:to="label_NewJerseyCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_CaliforniaCTIMember" xlink:label="CaliforniaCTIMember"/><link:label xlink:type="resource" xlink:label="label_CaliforniaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">California</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CaliforniaCTIMember" xlink:to="label_CaliforniaCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_IowaCTIMember" xlink:label="IowaCTIMember"/><link:label xlink:type="resource" xlink:label="label_IowaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Iowa</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IowaCTIMember" xlink:to="label_IowaCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_A00323068770291771979086400342CTIMember" xlink:label="A00323068770291771979086400342CTIMember"/><link:label xlink:type="resource" xlink:label="label_A00323068770291771979086400342CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">0.0323068770291771979086400342</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A00323068770291771979086400342CTIMember" xlink:to="label_A00323068770291771979086400342CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_MassachusettsCTIMember" xlink:label="MassachusettsCTIMember"/><link:label xlink:type="resource" xlink:label="label_MassachusettsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Massachusetts</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MassachusettsCTIMember" xlink:to="label_MassachusettsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_MarylandCTIMember" xlink:label="MarylandCTIMember"/><link:label xlink:type="resource" xlink:label="label_MarylandCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Maryland</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarylandCTIMember" xlink:to="label_MarylandCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#nt_GeorgiaCTIMember" xlink:label="GeorgiaCTIMember"/><link:label xlink:type="resource" xlink:label="label_GeorgiaCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" 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