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: 'Five years after the Vietnam War , a conservative , moral , rightwing Reagan could become the President of the United States .', Argument/Subject 1: 'reagan', Argument/Subject 2: 'unite state'
[A]: be president of

[Q]: Sentence: 'Frankfurt and Munich are the biggest airports in Germany .', Argument/Subject 1: 'frankfurt', Argument/Subject 2: 'germany'
[A]: be airport in

[Q]: Sentence: 'He has recently spent two years as the President of the Secondary School Principal Association of New Zealand .', Argument/Subject 1: 'association', Argument/Subject 2: 'president'
[A]:
have