About: http://webisa.webdatacommons.org/31478666

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	Iron, in the form of ferrous sulfate, is an ionic compound which is made by the oxidization of pyrite (a naturally occuring mineral) or by treating iron with sulfuric acid.
http://www.w3.org/ns/prov#wasQuotedFrom	tigersandstrawberries.com