From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.
Q: Given Relationship: 'be campaign in', Sentence: 'Other Democrats who have announced a campaign or exploratory committee are 2004 vice presidential nominee John Edwards , former Iowa Gov. Tom Vilsack , Connecticut Sen. Chris Dodd and Ohio Rep. Dennis Kucinich .'
A:
campaign