You will see a sentence and a given pronoun. Answer with the word in the sentence to which the pronoun is referring.

Ex Input:
text: the drain is clogged with hair. it has to be cleaned.; pronoun: it

Ex Output:
the drain


Ex Input:
text: frank felt crushed when his longtime rival bill revealed that he was the winner of the competition.; pronoun: he

Ex Output:
bill


Ex Input:
text: bob paid for charlie's college education, but now charlie acts as though it never happened. he is very hurt.; pronoun: he

Ex Output:

bob