<http://webisa.webdatacommons.org/prov/294561178>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/139059153> .
<http://webisa.webdatacommons.org/139059153>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/139059153>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<drexel.edu> .
<http://webisa.webdatacommons.org/139059153>	<http://www.w3.org/ns/prov#value>	"+??? Economic Factor: much cheaper than other suitable materials such as steel." .