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

Input: Consider Input: Sentence: 'a gate with a stop sign blocking the road'. Replace the letter 'h' with 'y' in the sentence.

Output: a gate wity a stop sign blocking tye road

Input: Consider Input: Sentence: 'a formal dinning room in a stately manor'. Replace the letter 'n' with 'o' in the sentence.

Output: a formal diooiog room io a stately maoor

Input: Consider Input: Sentence: 'a dog sits by and watches his owner'. Replace the letter 'r' with 'q' in the sentence.
Output: a dog sits by and watches his owneq