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: 'convert to', Sentence: 'After it converts ATP to ADP , the level of the latter accumulates outside the cell and the purine can bind to a purine receptor called P2Y1 .'

Ex Output:
converts


Ex Input:
Given Relationship: 'be city of', Sentence: 'Lahore is Pakistan 's second largest city and the capital of the northeastern province of Punjab .'

Ex Output:
city


Ex Input:
Given Relationship: 'present at', Sentence: 'Paper presented at the Comparative and International Education Society 49th Annual Conference , Stanford , California .'

Ex Output:

presented