About: http://webisa.webdatacommons.org/168298084

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 which W is a heteroatom such as S, or P, and R1 and R2 are, independently, H, alkyl, cycloalkyls, alkenyl, alkynyl, aryl, alkoxy, thioalkoxy, and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au