About: http://webisa.webdatacommons.org/165724145

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	is useful in identifying elements or compounds such as arsenic that may be present in a sample at very low concentrations and are of significance to investigators.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com