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: 'Michael Steele , chairman of the Republican National Committee , said Tuesday in a statement .', Argument/Subject 1: 'michael steele', Argument/Subject 2: 'republican national committee'
[A]: be chairman of


[Q]: Sentence: 'Melbourne : He may have worked his magic on millions of girls worldwide , but one Aussie girl has cast her spell on Harry Potter star Daniel Radcliffe .', Argument/Subject 1: 'daniel radcliffe', Argument/Subject 2: 'harry potter'
[A]: star as


[Q]: Sentence: 'Obama hits McCain on how you need China and Russia .', Argument/Subject 1: 'obama', Argument/Subject 2: 'china'
[A]:
need