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

Example Input: Sentence: 'a woman in blue jacket shaving a cows utters'. Replace the letter 'h' with 'q' in the sentence.
Example Output: a woman in blue jacket sqaving a cows utters

Example Input: Sentence: 'a group of young people playing a game of soccer'. Replace the letter 'c' with 'o' in the sentence.
Example Output: a group of young people playing a game of soooer

Example Input: Sentence: 'the flowers are in the vase parted nicely'. Replace the letter 'e' with 'n' in the sentence.
Example Output:
thn flownrs arn in thn vasn partnd nicnly