You will be given a definition of a task first, then some input of the task.
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.

Given Relationship: 'present at', Sentence: 'Paper presented at the PISA international conference : What do the PISA results tell us about the education quality and equality in the Pacific Rim , November 21-22 , Hong Kong .'
Output:
presented