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

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: 'little tubs of rice and mixed vegetables for a meal'. Replace the letter 't' with 'z' in the sentence.

Ex Output:
lizzle zubs of rice and mixed vegezables for a meal


Ex Input:
Sentence: 'a small propeller plane sits on the runway'. Replace the letter 'a' with 'f' in the sentence.

Ex Output:

f smfll propeller plfne sits on the runwfy