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

Ex Input:
Sentence: 'a buddha statue sitting under a cat umbrella'. Replace the letter 'c' with 'h' in the sentence.

Ex Output:
a buddha statue sitting under a hat umbrella

Ex Input:
Sentence: 'a house cat standing in front of television'. Replace the letter 'n' with 'p' in the sentence.

Ex Output:
a house cat stapdipg ip fropt of televisiop

Ex Input:
Sentence: 'there is a tall tower that has a clock at the top'. Replace the letter 'k' with 'l' in the sentence.

Ex Output:
there is a tall tower that has a clocl at the top