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.

But in cases of firms like Aircel, for instance, it can trade most of its liberalized 2300MHz spectrum with Vodafone or Idea – trading with Bharti Airtel could run up against the caps which prohibit a telco from owning more than 50% of the spectrum in any band or 25% across all bands.

Answer: owned_by: Bharti Airtel, Vodafone