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 friend of', Sentence: 'I have always taken the position that Israel is a friend of the United States , and that friends should always stand up for one another , even in difficult times .'

SOLUTION: friend

PROBLEM: Given Relationship: 'present to', Sentence: 'Paper presented at the CHI'2001 Conference on Human Factors in Computing Systems , Seattle , WA , April , 2001 .'

SOLUTION: presented

PROBLEM: Given Relationship: 'be president of', Sentence: 'The Rev. Ted Haggard , the former president of the National Association of Evangelicals and one of the nation most influential Christian leaders , admitted today that he had purchased the illegal drug methamphetamine from a gay escort in Denver , but denied that he ever had sex with the man .'

SOLUTION:
president