About: http://webisa.webdatacommons.org/257123010

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	In some examples, ???X??? may refer to heteroatoms, such as oxygen, sulfur or nitrogen.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com