About: http://webisa.webdatacommons.org/365650643

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	A3 is ##STR23## where s is an integer from 2 to 6, inclusive; R7 is hydrogen, methyl or ethyl (more preferably methyl or ethyl) or
http://www.w3.org/ns/prov#wasQuotedFrom	google.com