TASK DEFINITION: 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.
PROBLEM: Given Relationship: 'be mayor of', Sentence: 'Former New York City mayor Rudy Giuliani joined in the mockery .'

SOLUTION: mayor

PROBLEM: Given Relationship: 'be chairman of', Sentence: 'Frank , the powerful chairman of the House Financial Services Committee who has been credited with largely shaping the $ 700 billion bailout plan , also said he expects the cost of to be much less .'

SOLUTION: chairman

PROBLEM: Given Relationship: 'present at', Sentence: 'Paper presented at the 90th Annual Meeting of the American Anthropological Association in Chicago , 13pp .'

SOLUTION:
presented