About: http://webisa.webdatacommons.org/426289502

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	The bars 2 and 3 can be made, for example, ofa mineral, such as glass or sapphire, of wood, of a synthetic material, such as sintered ceramic, or of a thermosetting synthetic plastic.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com