About: http://webisa.webdatacommons.org/392165524

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	Retroviruses cause cancers in chickens, sheep, mice, and other animals, but their effect on humans became clear only in the late nineteen-seventies, with the identification of two viruses that cause forms of leukemia.
http://www.w3.org/ns/prov#wasQuotedFrom	newyorker.com