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

Example Input: Sentence: 'a clock mounted above a door entrance with windows'. Replace the letter 's' with 'l' in the sentence.
Example Output: a clock mounted above a door entrance with windowl

Example Input: Sentence: 'a plate topped with waffles, bacon and banana slices'. Replace the letter 'a' with 'k' in the sentence.
Example Output: k plkte topped with wkffles, bkcon knd bknknk slices

Example Input: Sentence: 'a kid's room with very many playing toys'. Replace the letter 'i' with 'm' in the sentence.
Example Output:
a kmd's room wmth very many playmng toys