What is the relationship between 'SABMiller' and 'Anheuser-Busch InBev' in the context of the input sentence.
Options: headquarters location, owner of, parent organization, chief executive officer

* Anheuser-Busch InBev explores $280bn mega deal for SABMiller (Amsterdam: MI8.AS - news ) * Another takeover challenge for SABMiller’s chairman Separately, Société Générale upgraded the stock to “buy”, lifting its target price by £8 to £43.
parent organization