About: http://webisa.webdatacommons.org/311112438

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	These walls are preferably made of a hard material such as a ceramic, an iron based alloy such as steel, or a Ni???, Co??? or Fe-based superalloy such as monel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es