<http://webisa.webdatacommons.org/prov/407209174>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/284467317> .
<http://webisa.webdatacommons.org/284467317>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/284467317>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/407209158>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/284467317> .
<http://webisa.webdatacommons.org/284467317>	<http://www.w3.org/ns/prov#value>	"that at least one of R1 and R2 is other than a hydrogen atom;" .