<http://webisa.webdatacommons.org/32888182>	<http://www.w3.org/ns/prov#value>	"Every variable is a formula." .
<http://webisa.webdatacommons.org/prov/57974921>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/32888182> .
<http://webisa.webdatacommons.org/32888182>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/32888182>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stanford.edu> .