<http://webisa.webdatacommons.org/174783513>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/174783513>	<http://www.w3.org/ns/prov#value>	" R1 and R2 are each independently a hydrogen atom, an alkyl group of 1 to 8 carbon atoms or an aryl group, and at least one of R1 and R2 is a hydrogen atom." .
<http://webisa.webdatacommons.org/prov/140589058>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/174783513> .
<http://webisa.webdatacommons.org/prov/141546618>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/174783513> .
<http://webisa.webdatacommons.org/174783513>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .