About: http://webisa.webdatacommons.org/371039512

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	Vitamin A is an essential vitamin and is best known for having positive effects on vision.
http://www.w3.org/ns/prov#wasQuotedFrom	drug-purchase.info