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

Ex Input:
Sentence: 'a man that is throwing a frizbee in the woods'. Replace the letter 'g' with 'u' in the sentence.

Ex Output:
a man that is throwinu a frizbee in the woods

Ex Input:
Sentence: 'two children struggle over a bat in their playroom'. Replace the letter 't' with 'v' in the sentence.

Ex Output:
vwo children svruggle over a bav in vheir playroom

Ex Input:
Sentence: 'two men riding skis down a snow covered ski slope'. Replace the letter 'o' with 'p' in the sentence.

Ex Output:
twp men riding skis dpwn a snpw cpvered ski slppe