<http://webisa.webdatacommons.org/239343072>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/54955640>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/239343072> .
<http://webisa.webdatacommons.org/239343072>	<http://www.w3.org/ns/prov#value>	"One class of compounds is that where R2 is a substituted pyridyl group and R1 is a covalent bond." .
<http://webisa.webdatacommons.org/239343072>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .