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.

Example Input: Sentence: 'Frankfurt and Munich are the biggest airports in Germany .', Argument/Subject 1: 'frankfurt', Argument/Subject 2: 'germany'
Example Output: be airport in

Example Input: Sentence: 'He married Mary Whipple daughter of Capt .', Argument/Subject 1: 'mary', Argument/Subject 2: 'capt'
Example Output: be daughter of

Example Input: Sentence: 'CNN had just projected an image of Barack Obama as certain to be elected President of the United States .', Argument/Subject 1: 'president', Argument/Subject 2: 'unite state'
Example Output:
elect of