<http://webisa.webdatacommons.org/prov/413415813>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/132649647> .
<http://webisa.webdatacommons.org/132649647>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/132649647>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<widwebway.com> .
<http://webisa.webdatacommons.org/132649647>	<http://www.w3.org/ns/prov#value>	"The clearest definition is that an interface is a contract." .