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

Ex Input:
Sentence: 'the big sandwich features several different  colorful ingredients'. Replace the letter 'e' with 'o' in the sentence.

Ex Output:
tho big sandwich foaturos sovoral difforont  colorful ingrodionts


Ex Input:
Sentence: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.

Ex Output:
a bunsh of signs on a pole on the street


Ex Input:
Sentence: 'fire hydrant in the middle of a field with a bare-bones building'. Replace the letter 'i' with 'd' in the sentence.

Ex Output:

fdre hydrant dn the mdddle of a fdeld wdth a bare-bones budlddng