In this task, you need to replace a letter in the sentence with another given letter.

Ex Input:
Sentence: 'a broken suitcase on a small tile floor with the contents exposed'. Replace the letter 'u' with 'z' in the sentence.

Ex Output:
a broken szitcase on a small tile floor with the contents exposed


Ex Input:
Sentence: 'two people are passing a man playing a piano on the street'. Replace the letter 'o' with 'i' in the sentence.

Ex Output:
twi peiple are passing a man playing a piani in the street


Ex Input:
Sentence: 'a boy and girl are sitting at a table of food'. Replace the letter 'b' with 'e' in the sentence.

Ex Output:

a eoy and girl are sitting at a taele of food