<http://webisa.webdatacommons.org/143500344>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/215736130>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/143500344> .
<http://webisa.webdatacommons.org/143500344>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/143500344>	<http://www.w3.org/ns/prov#value>	"wherein W is --NH-- or --N(CH3)--, or, [0027] wherein X is a bond or" .