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: 'betray', Sentence: 'Judas had agreed to betray Jesus for the sum of thirty pieces of silver .'

SOLUTION: betray

PROBLEM: Given Relationship: 'be president of', Sentence: 'Egypt 's President Hosni Mubarak is receiving tomorrow Palestinian President Yasser Arafat who is visiting Egypt before heading to Washington to attend the three-way summit that was urged on by the U.S President Bill Clinton and will be attended by Arafat and Israeli Prime Minister Ehud Barak .'

SOLUTION: President

PROBLEM: Given Relationship: 'present at', Sentence: 'Poster presented at the Annual Convention of the American Psychological Association , San Francisco , CA.'

SOLUTION:
presented