You will be given a definition of a task first, then some input of the task.
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: 'Mitt Romney is attacking Hillary in a television ad in the critical New Hampshire market on the grounds that a woman ca n't be president of the United States .', Argument/Subject 1: 'mitt romney', Argument/Subject 2: 'unite state'
Output:
be president of