About: http://webisa.webdatacommons.org/316101342

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	Calo said the approach can be used for other heavy metals, such as lead, mercury, and tin.
http://www.w3.org/ns/prov#wasQuotedFrom	brown.edu