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: 'a pair of planes in an airport lot parked for boarding and exiting'. Replace the letter 'e' with 'o' in the sentence.

Ex Output:
a pair of planos in an airport lot parkod for boarding and oxiting

Ex Input:
Sentence: 'the couple is sitting at the table talking with friends'. Replace the letter 'a' with 'w' in the sentence.

Ex Output:
the couple is sitting wt the twble twlking with friends