About: http://webisa.webdatacommons.org/382570840

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	Inorganic Chemicalsfracturing may also release other elements from the fractured shales, tight sands, and coalbeds,notably heavy metals such as barium and strontium.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net