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: 'begin in', Sentence: 'Three issues will be published during the Fall Semester beginning in August 2006 .'

Ex Output:
beginning


Ex Input:
Given Relationship: 'be president of', Sentence: 'Afghanistan president Hamid Karzai met Prime Minister Manmohan Singh at the Hyderabad House in New Delhi on Monday .'

Ex Output:
president


Ex Input:
Given Relationship: 'be service of', Sentence: 'PubMed is a service of the U.S. National Library of Medicine that includes over 18 million citations from MEDLINE and ... Spasm of accommodation , creating ...'

Ex Output:

service