Detailed Instructions: Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.
Problem:Sentence: 'Bungie became really popular with the Xbox crowd after Microsoft bought them out while they were working on Halo for the Macintosh .', Argument/Subject 1: 'bungie', Argument/Subject 2: 'microsoft'
Solution:
be buy by