<http://webisa.webdatacommons.org/116892625>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/116892625>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/141546618>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/116892625> .
<http://webisa.webdatacommons.org/116892625>	<http://www.w3.org/ns/prov#value>	"[0140] When R1 is a hydrogen atom, it is preferred that: X is" .