Q: 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.
Sentence: 'He was previously Director of Research at Congressionally appointed Commission on Immigration Reform where he was also Assistant Director for the Mexico/US Binational Study on Migration .', Argument/Subject 1: 'commission', Argument/Subject 2: 'director'
A:
appoint