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: 'be capital of', Sentence: 'Cusco is the ancient capital of Inca empire and is a beautiful , beautiful town .'

Ex Output:
capital


Ex Input:
Given Relationship: 'be leader of', Sentence: 'Louis Farrakhan is currently the leader of the Nation of Islam and lives in Chicago , Illinois at the former home of Elijah Muhammad , near the campus of the University of Chicago .'

Ex Output:
leader


Ex Input:
Given Relationship: 'present at', Sentence: 'Notes : Paper presented at International Workshop on Reliability in Decentralized Distributed Systems .'

Ex Output:

presented