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: 'Communities bt meds possible problem heart arrhythmia after pare hydrocodone m hydrocodone how long lastng oral morphine methadone potentiation xanax buy online .', Argument/Subject 1: 'xanax', Argument/Subject 2: 'online'
Example Output: buy

Example Input: Sentence: 'The West End Hotel Downtown Dallas is located in downtown Dallas , Texas .', Argument/Subject 1: 'hotel', Argument/Subject 2: 'downtown'
Example Output: be locate in

Example Input: Sentence: 'Qin Shi Huang was the first emperor to unify China .', Argument/Subject 1: 'qin shus huang', Argument/Subject 2: 'china'
Example Output:
be emperor of