About: http://webisa.webdatacommons.org/236524473

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	Citric acid is an example of a tribasic acid, HOOCCH2 C(OH)(COOH)CH2 COOH. Hydroxy carboxylic acids, such as glycollic acid, lactic acid, tartaric acid, and malic acid are within the purview of the present invention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com