<http://webisa.webdatacommons.org/154830153>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/54062820>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/154830153> .
<http://webisa.webdatacommons.org/154830153>	<http://www.w3.org/ns/prov#value>	"The calculus can be developed completely using only symbols such as x, y, z etc." .
<http://webisa.webdatacommons.org/154830153>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freecapitalists.org> .