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.

Q: Sentence: 'The headquarters of the United States Military Cancer Institute is located at the Walter Reed Army Medical Center in Washington , D.C.', Argument/Subject 1: 'center', Argument/Subject 2: 'unite state'

A: be locate in
****
Q: 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'

A: buy
****
Q: Sentence: 'In a statement the company said it has formally launched a subsidiary named Chinalco Tibet Mining Co. Ltd at the Tibetan capital Lhasa with a registered capital of $ 36.5 million .', Argument/Subject 1: 'lhasa', Argument/Subject 2: 'tibet'

A:
be capital of
****