instruction:
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.
question:
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'
answer:
be head of

question:
Sentence: 'Ever since Columbus discovered the Americas at the end of the 15th Century , the region was known as The New World .', Argument/Subject 1: 'columbus', Argument/Subject 2: 'america'
answer:
discover

question:
Sentence: 'Friedman LLC , a leading private equity firm based in San Francisco , announced today that Frank Zarb , most recently chairman and chief executive officer of the Nasdaq Stock Market , has joined the organization as a senior advisor and managing director .', Argument/Subject 1: 'llc', Argument/Subject 2: 'san francisco'
answer:
be base in