<http://webisa.webdatacommons.org/260728568>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackexchange.com> .
<http://webisa.webdatacommons.org/260728568>	<http://www.w3.org/ns/prov#value>	"t sometimes there is a function so that $\\nabla f = A$." .
<http://webisa.webdatacommons.org/260728568>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/472274169>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/260728568> .