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: 'We quickly learned that Prague has become the fashion capital of Eastern Europe .'

Ex Output:
capital


Ex Input:
Given Relationship: 'be neighborhood in', Sentence: 'For April 2008 , the average home selling price in the San Francisco neighborhood of Potrero Hill was $ 681,333 .'

Ex Output:
neighborhood


Ex Input:
Given Relationship: 'be capital city of', Sentence: 'Lagos was the former capital city of Nigeria but it has since been replaced by Abuja .'

Ex Output:

capital