About: http://webisa.webdatacommons.org/4644831

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	Efficacy of other kinds of preventive measures often are not assessed until long down the road.
http://www.w3.org/ns/prov#wasQuotedFrom	fda.gov