Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: 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.

Why Glencore matters Mining companies make up a large part of the FTSE 100 and so their share prices are significant to pension funds - and therefore savers - across Britain.Glencore's stock is down more than 76 per cent in year-to-date – marking it the worst performer in the bluechip index this year, according to FE Trustnet data.

Answer: industry: Glencore, Mining