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.

Example Input: Given Relationship: 'attack', Sentence: 'The U.S. has pledged to warn Israel of any attack against Iraq .'
Example Output: attack

Example Input: Given Relationship: 'present at', Sentence: 'Paper presented at the First International Conference on English , Discourse and Cultural Communication .'
Example Output: presented

Example Input: Given Relationship: 'be president of', Sentence: 'When Barack Obama took the oath of office to become the next President of the United States on Jan . 20 , 2009 , millions of people around the nation and around the world were overwhelmed with joy and pride .'
Example Output:
President