About: http://webisa.webdatacommons.org/24428146

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	Such pre-casting can use a material such as polyvinyl alcohol, polystyrene, and spin-on glass in thicknesses, e.g., of up to about 75 microns.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com