About: http://webisa.webdatacommons.org/18128063

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Toward the end of the 19th century ??? when the United States first began to impose meaningful restrictions on immigration ??? we carved out exemptions for our neighbors in the Western Hemisphere, especially Mexico.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalaffairs.com