About: http://webisa.webdatacommons.org/213432756

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	First of all, arsenic can naturally enter the environment from rocks, soil, water, air, plants and animals, or as a result of such human activities as coal burning, copper smelting and mineral ore processing.
http://www.w3.org/ns/prov#wasQuotedFrom	hellawella.com