About: http://webisa.webdatacommons.org/407728729

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	At one time, polio was a scourge throughout much of the world, until vaccines were developed in the 1950s, and the iron lung was a crucial treatment tool for people paralyzed by polio.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com