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.

Ex Input:
Given Relationship: 'be president of', Sentence: 'Barack Obama today becomes the first black president of the United States of America .'

Ex Output:
president


Ex Input:
Given Relationship: 'be president of', Sentence: 'A month after writing this , he became President of the United States when Richard M. Nixon resigned .'

Ex Output:
President


Ex Input:
Given Relationship: 'serve in', Sentence: 'Smith County was named for Major David Smith who served as a Private in the Revolutionary War at Kings Mountain , Cowpens , and Euthaw Springs .'

Ex Output:

served