<http://webisa.webdatacommons.org/prov/54715222>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/93834648> .
<http://webisa.webdatacommons.org/prov/54169316>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/93834648> .
<http://webisa.webdatacommons.org/93834648>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<algebrahelp.com> .
<http://webisa.webdatacommons.org/93834648>	<http://www.w3.org/ns/prov#value>	"In algebra, letters such as x or y are used to represent values which are" .
<http://webisa.webdatacommons.org/93834648>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .