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

Ex Input:
Sentence: 'a male holding a baseball bat standing on a big white star'. Replace the letter 'a' with 'i' in the sentence.

Ex Output:
i mile holding i bisebill bit stinding on i big white stir


Ex Input:
Sentence: 'a teddy bear playing a drum and a teddy bear playing a guitar'. Replace the letter 'd' with 'm' in the sentence.

Ex Output:
a temmy bear playing a mrum anm a temmy bear playing a guitar


Ex Input:
Sentence: 'group of people on skies going down a snowy slope'. Replace the letter 'g' with 't' in the sentence.

Ex Output:

troup of people on skies toint down a snowy slope