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: 'open on', Sentence: 'Registration for Cybernet Expo will open in February .'

Ex Output:
open


Ex Input:
Given Relationship: 'be city in', Sentence: 'The Early Renaissance began in the city of Florence in Central Italy in the fourteenth century .'

Ex Output:
city


Ex Input:
Given Relationship: 'be better than', Sentence: 'So McCain is no better than Obama .'

Ex Output:

better