About: http://webisa.webdatacommons.org/262883433

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	Overbased calcium sulfonates are generally produced by carbonating a mixture of hydrocarbons, sulfonic acid, calcium oxide or calcium hydroxide and promoters such as methanol and water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com