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 capital of', Sentence: 'Rome is the capital of Italy and the ruling seat of the Roman Empire and Catholicism .'

Ex Output:
capital


Ex Input:
Given Relationship: 'be head of', Sentence: 'The assistant attorney general in charge of criminal investigations at the time was Michael Chertoff , also a dual citizen of Israel , who was later promoted to head the Department Of Homeland Security .'

Ex Output:

head