About: http://webisa.webdatacommons.org/30785077

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	However, although there is a requirement for a suitable iridescence reducing underlayer, the underlayers proposed in GB patent No. 2 031 756B have not been used commercially to any significant extent.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com