About: http://webisa.webdatacommons.org/299240407

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	??? crystalline silica from bricks and cement and other masonry products, and
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com