About: http://webisa.webdatacommons.org/121448419

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	Preferred acid anhydrides include those having on the molecule one or two aliphatic or aromatic rings, one or two acid anhydride groups (e.g., ???CO???O???CO???), and about 4 to 25 carbons, and especially about 8 to 20 carbon atoms.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com