About: http://webisa.webdatacommons.org/109388222

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 another embodiment, R5a includes optionally substituted alkyl (e.g., methyl, ethyl, propyl or butyl), which may be substituted with groups such as hydroxy, alkoxy (e.g., ethoxy), and carboxylate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com