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.

Ex Input:
Sentence: 'Buffy looks at Xander .', Argument/Subject 1: 'buffy', Argument/Subject 2: 'xander'

Ex Output:
look up at


Ex Input:
Sentence: 'V Murder said on Tue , 04/05/2005 - 9:22am .', Argument/Subject 1: 'v murder', Argument/Subject 2: 'tue'

Ex Output:
say on


Ex Input:
Sentence: 'Google bought YouTube for $ 1.65 billion ?', Argument/Subject 1: 'google', Argument/Subject 2: 'youtube'

Ex Output:

be buy