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.

Input: Consider Input: Given Relationship: 'be part of', Sentence: 'Finland was part of the Russian Empire until the end of WW I. i .e .1917 .'

Output: part


Input: Consider Input: Given Relationship: 'be festival of', Sentence: 'The home is costly perfection itself and the family has gathered to celebrate the great Christian festival Christmas .'

Output: festival


Input: Consider Input: Given Relationship: 'be bear in', Sentence: 'He was born in Milan , his father being the Italian rationalist architect Gino Pollini .'


Output: being