<http://webisa.webdatacommons.org/319967540>	<http://www.w3.org/ns/prov#value>	"Subtraction is mostly symmetric with addition," .
<http://webisa.webdatacommons.org/319967540>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .
<http://webisa.webdatacommons.org/prov/84320821>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/319967540> .
<http://webisa.webdatacommons.org/319967540>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .