About: http://webisa.webdatacommons.org/340113727

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	John Vandenberg, a biologist, explains the difficulty : ???Well, one of the problems is that we would have to take half of the kids in the kindergarten and give them BPA and the other half not.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com