About: http://webisa.webdatacommons.org/140511471

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 addition, various industrial products contain calcium at a suitable level, such as cement kiln dust, lime kiln dust, Portland cement, and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com