About: http://webisa.webdatacommons.org/134540064

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	Part of this example describes metal contaminants such as Cu and Fe, although any manner of chemical contaminants can be applied in this way.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com