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.

The de-linking of licences from spectrum wherein spectrum had to be bought in open auctions ensured that only serious operators remained in the game and led to a scenario where only three operators — Bharti Airtel , Vodafone India and Idea Cellular—consolidated their market position cornering around 75% of the subscriber market.

Answer: owned_by: Bharti Airtel, Vodafone