About: http://webisa.webdatacommons.org/6038571

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 the past, natural calcium carbonate has been used as a filler and extender pigment and has been employed in formulating and compounding many different types of materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es