About: http://webisa.webdatacommons.org/363683679

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	R11 and R12 may combine with each other to form a ring, with preferred examples of such ring being ##STR20## (in this case, Ah represents hydrogen), when R11 and R12 do not form a ring, any one of R11 and R12 is a hydrogen atom, and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com