About: http://webisa.webdatacommons.org/217446982

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	Workers in the field encounter a more complex problem when metals such as calcium or iron are present as in an oil-soluble form.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com