About: http://webisa.webdatacommons.org/413603843

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Aluminum is a suitable material from which to construct the ramp because it provides the strength of a metal but is not as heavy as other metals.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com