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.

Sentence: 'President elect Barack Obamas pick for CIA chief , Leon Panetta , does not belong to the intelligence community , but is a professional manager , just what the CIA might need .', Argument/Subject 1: 'obama', Argument/Subject 2: 'president'
be elect

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'
be president of

Sentence: 'Rights group Reporters Without Borders last week sent an open letter to International Olympic Committee president Jacques Rogge detailing what they described as abuse of journalists and accusing him of allowing it to happen by remaining silent .', Argument/Subject 1: 'jacque rogge', Argument/Subject 2: 'international olympic committee'

be president of