About: http://webisa.webdatacommons.org/182471335

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	Examples include --COOH, --SO3 H and --PO3 H2, --SO2 NH2, --SO2 NHCOR, and their salts, for example --COONa, --COOK, --COO- NR4 +, --SO3 Na, --HPO3 Na, --SO3 - NR4 +, and PO3 Na2, where R is an alkyl or phenyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au