About: http://webisa.webdatacommons.org/35814960

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	Substances such as arsenic, lead, mercury, copper and cadmium have contaminated as much as 10 per cent of farmland, according to some estimates.
http://www.w3.org/ns/prov#wasQuotedFrom	sinocism.com