<http://webisa.webdatacommons.org/123354746>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/117943179>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/123354746> .
<http://webisa.webdatacommons.org/123354746>	<http://www.w3.org/ns/prov#value>	"R.sub.7 is preferably methyl or ethyl, and in particular methyl." .
<http://webisa.webdatacommons.org/123354746>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .