Given phrases that describe the relationship between two words/phrases as options, extract the word/phrase pair and the corresponding lexical relationship between them from the input text. The output format should be "relation1: word1, word2; relation2: word3, word4". Options: 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.

That was before Glencore listed on the London Stock Exchange (Other OTC: LDNXF - news ) in May 2011 at 530p and then acquired mining giant Xstrata a year later.

Answer: stock_exchange: Glencore, London Stock Exchange; industry: Glencore, mining; owned_by: Xstrata, Glencore