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

Example Input: Sentence: 'a small child reaching back with a wii remote'. Replace the letter 'l' with 'o' in the sentence.
Example Output: a smaoo chiod reaching back with a wii remote

Example Input: Sentence: 'mannequins are beside a motor scooter inside a display case'. Replace the letter 'l' with 'c' in the sentence.
Example Output: mannequins are beside a motor scooter inside a dispcay case

Example Input: Sentence: 'baseball team huddling on the mound talking together'. Replace the letter 't' with 'y' in the sentence.
Example Output:
baseball yeam huddling on yhe mound yalking yogeyher