<http://webisa.webdatacommons.org/132918675>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<engineering.com> .
<http://webisa.webdatacommons.org/prov/472639392>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/132918675> .
<http://webisa.webdatacommons.org/132918675>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/132918675>	<http://www.w3.org/ns/prov#value>	"For example they solved equations such as a (a - x) = x2 by geometrical means. (iv) The discovery of irrationals." .