About: http://webisa.webdatacommons.org/188856914

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	Some of these contaminants are not harmful to human health in trace or extremely small amounts, while others can cause or contribute to numerous diseases, including cancer. ???
http://www.w3.org/ns/prov#wasQuotedFrom	dadtalk.net