About: http://webisa.webdatacommons.org/317081479

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 1810, he invented an artificial pumice and years later, a version of stoneware which was used to make mortars, funnels and other utensils.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org