What is the relationship between Gemfields and Mining in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Mon, Sep 14, 2015, 16:46 BST - UK Markets closed Is Now The Perfect Time To Buy Gemfields PLC, Rare Earth Minerals PLC And Hochschild Mining Plc By Peter Stephens | Fool.co.uk – 35 minutes ago 1.041 -0.0240

Answer: industry