<http://webisa.webdatacommons.org/132504956> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/132504956> <http://www.w3.org/ns/prov#value> "This is done, for example, by means of light-absorbing additives such as titanium dioxide, whose compounding leads to nontransparent products." . <http://webisa.webdatacommons.org/prov/435121064> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/132504956> . <http://webisa.webdatacommons.org/132504956> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.es> .