About: http://webisa.webdatacommons.org/54575655

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	The reason is that much of our sewage combines residential and industrial waste, resulting in contamination by substances such as mercury, lead and dioxins.
http://www.w3.org/ns/prov#wasQuotedFrom	urbanfarmonline.com