About: http://webisa.webdatacommons.org/103693187

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	In a further embodiment, the light absorbing material and the photochromic material are both impregnated or embedded into a porous substrate such as paper.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es