<http://webisa.webdatacommons.org/194921490>	<http://www.w3.org/ns/prov#value>	"one of R4 and R5 is a hydrogen atom; as the alkyl group," .
<http://webisa.webdatacommons.org/prov/332487832>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/194921490> .
<http://webisa.webdatacommons.org/194921490>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/194921490>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/333024195>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/194921490> .