About: http://webisa.webdatacommons.org/318724843

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	Sulfur covalently bonded with non-sulfur atoms, such as carbon, hydrogen or other atomic species, including heterorganic compounds, is not ???free??? or elemental sulfur.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com