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

Example Input: Sentence: 'a large orange cat sits in a chair outside'. Replace the letter 'e' with 'x' in the sentence.
Example Output: a largx orangx cat sits in a chair outsidx

Example Input: Sentence: 'a man has his hand on top of a blender'. Replace the letter 'd' with 'o' in the sentence.
Example Output: a man has his hano on top of a blenoer

Example Input: Sentence: 'a car parked next to a parking meter in the snow'. Replace the letter 'r' with 'j' in the sentence.
Example Output:
a caj pajked next to a pajking metej in the snow