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.

In connection with the proposed merger, comScore intends to file a registration statement on Form S-4, which will include a preliminary prospectus and related materials to register the shares of comScore common stock to be issued in the merger, and comScore and Rentrak intend to file a joint proxy statement/prospectus and other documents concerning the proposed merger with the SEC.

Answer: owner_of: comScore, Rentrak