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

Ex Input:
Sentence: 'a couch, footrest, tv and other furniture are arranged in a living room'. Replace the letter 'o' with 'g' in the sentence.

Ex Output:
a cguch, fggtrest, tv and gther furniture are arranged in a living rggm

Ex Input:
Sentence: 'a crowd looking at a trio of planes that are sitting idle'. Replace the letter 'a' with 'e' in the sentence.

Ex Output:
e crowd looking et e trio of plenes thet ere sitting idle

Ex Input:
Sentence: 'a man riding a skateboard down a street next to houses'. Replace the letter 'i' with 'c' in the sentence.

Ex Output:
a man rcdcng a skateboard down a street next to houses