<http://webisa.webdatacommons.org/140322741>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/141546618>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/140322741> .
<http://webisa.webdatacommons.org/prov/284115527>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/140322741> .
<http://webisa.webdatacommons.org/140322741>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/140322741>	<http://www.w3.org/ns/prov#value>	"In another embodiment, each R1 is a hydrogen, and R2 is a hydrogen." .