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: 'I was editor of Surfer magazine , and Richard Nixon was president of the United States .', Argument/Subject 1: 'nixon', Argument/Subject 2: 'unite state'
[A]: be president of


[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: '" Tears of Ressentiment : Reading Zhang Zhupo Reading Jin Ping Mei" , paper presented at the 47th Association for Asian Studies Annual Conference , Washington D.C. , USA , April 1995 .', Argument/Subject 1: 'paper', Argument/Subject 2: 'annual conference'
[A]:
present at