<http://webisa.webdatacommons.org/prov/333262909>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/199312625> .
<http://webisa.webdatacommons.org/199312625>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/55206384>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/199312625> .
<http://webisa.webdatacommons.org/199312625>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/199312625>	<http://www.w3.org/ns/prov#value>	"optionally substituted; (a) when R1 is a hydrogen atom, R1'" .