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 current President , Dr. Peter Fong , is the Head of the Centre for Executive Development of HKU SPACE and former Executive Vice President and Professor of Asia International Open University .', Argument/Subject 1: 'president', Argument/Subject 2: 'executive'

A: be head of
****
Q: Sentence: 'Credit Cards can be accepted over the phone 817-373-2534 or fax : 817-373-3207 or place your classified online .', Argument/Subject 1: 'credit card', Argument/Subject 2: 'online'

A: accept
****
Q: Sentence: 'Chris straightened and turned to Buck , a smile still on his face .', Argument/Subject 1: 'chri', Argument/Subject 2: 'buck'

A:
turn to
****