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<http://webisa.webdatacommons.org/131146780>	<http://www.w3.org/ns/prov#value>	"In 1970, sixty percent of Puerto Ricans on the mainland lived in New York, mostly in New York City." .
<http://webisa.webdatacommons.org/131146780>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<yale.edu> .
<http://webisa.webdatacommons.org/prov/178827963>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/131146780> .