About: http://webisa.webdatacommons.org/434536757

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	For example, in propene there are a hydrogen and a methyl group at one end, but two hydrogen atoms at the other end of the double bond.
http://www.w3.org/ns/prov#wasQuotedFrom	chemguide.co.uk