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.

Mining and trading company Glencore Plc (Xetra: A1JAGV - news ) , former Xstrata Chief Executive Officer Mick Davis' X2, and British investment firm Audley Capital (Other OTC: CGHC - news ) were among the first round of bidders, sources told Reuters in June.

Answer: industry: Glencore, Mining; owned_by: Xstrata, Glencore