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

Ex Input:
Sentence: 'a woman sitting along the body of water looking at her cell phone'. Replace the letter 'e' with 'b' in the sentence.

Ex Output:
a woman sitting along thb body of watbr looking at hbr cbll phonb


Ex Input:
Sentence: 'a large elephant that has people all around it'. Replace the letter 'h' with 'm' in the sentence.

Ex Output:
a large elepmant tmat mas people all around it


Ex Input:
Sentence: 'a white dog resting on a rocky cliff'. Replace the letter 'c' with 'r' in the sentence.

Ex Output:

a white dog resting on a rorky rliff