<http://webisa.webdatacommons.org/261569181>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/261569181>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/496587756>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/261569181> .
<http://webisa.webdatacommons.org/261569181>	<http://www.w3.org/ns/prov#value>	"carbon atoms, R2 is a hydrogen atom or methyl group." .