About: http://webisa.webdatacommons.org/445038964

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	How do we extract iron from its mineral ores? ??? The raw materials needed i.e. limestone, coke, air and iron ore and the chemistry of ??? Iron Ore Mining Equipment???
http://www.w3.org/ns/prov#wasQuotedFrom	chinagrindingmill.net