<http://webisa.webdatacommons.org/188280856>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/188280856>	<http://www.w3.org/ns/prov#value>	"Now, suppose that R ??? R. If you suppose that R is a set, you get a contradiction, so R must be a proper class." .
<http://webisa.webdatacommons.org/prov/449895823>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/188280856> .
<http://webisa.webdatacommons.org/188280856>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackexchange.com> .