<http://webisa.webdatacommons.org/342278079>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/342278079>	<http://www.w3.org/ns/prov#value>	"If A is a formula then -A is a formula." .
<http://webisa.webdatacommons.org/342278079>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<liu.se> .
<http://webisa.webdatacommons.org/prov/472266051>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/342278079> .