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.
Text: BUENOS AIRES Aug 18 Argentina's state-run energy firm YPF will pay about $122 million for stakes in two locally based petrochemical companies as part of its growth strategy to add value to locally produced crude oil, the company said on Tuesday.
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headquarters_location: YPF, BUENOS AIRES
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