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

Example Input: Sentence: 'a man that is holding a remote to a game'. Replace the letter 'a' with 'z' in the sentence.
Example Output: z mzn thzt is holding z remote to z gzme

Example Input: Sentence: 'a young boy in a shopping cart looking at tooth brushes'. Replace the letter 'o' with 'r' in the sentence.
Example Output: a yrung bry in a shrpping cart lrrking at trrth brushes

Example Input: Sentence: 'a plate with an open sandwich next to a little bowl of soup and a wine glass'. Replace the letter 'a' with 'b' in the sentence.
Example Output:
b plbte with bn open sbndwich next to b little bowl of soup bnd b wine glbss