<http://webisa.webdatacommons.org/216547403>	<http://www.w3.org/ns/prov#value>	"These may be constructed from lightweight metal such as aluminum." .
<http://webisa.webdatacommons.org/prov/363606105>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/216547403> .
<http://webisa.webdatacommons.org/216547403>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sfgate.com> .
<http://webisa.webdatacommons.org/216547403>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .