<http://webisa.webdatacommons.org/209178439>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/297518777>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/209178439> .
<http://webisa.webdatacommons.org/209178439>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/209178439>	<http://www.w3.org/ns/prov#value>	"When the nitrogen atom is substituted with only one carboxyl group, the other substituent on the nitrogen atom can be hydrogen or a monovalent organic radical such as an alkyl group." .