<http://webisa.webdatacommons.org/54937711>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/54937711>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<djangoproject.com> .
<http://webisa.webdatacommons.org/prov/38987731>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/54937711> .
<http://webisa.webdatacommons.org/54937711>	<http://www.w3.org/ns/prov#value>	"hack around the validation by designating some field other than the email address our USERNAME_FIELD actually seems like not a hack, but the right approach." .