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

Example Input: Sentence: 'a man in a field standing as a ball comes through the air towards him'. Replace the letter 'u' with 'j' in the sentence.
Example Output: a man in a field standing as a ball comes throjgh the air towards him

Example Input: Sentence: 'someone playing frisbee with a dog in the middle of a court'. Replace the letter 'd' with 'r' in the sentence.
Example Output: someone playing frisbee with a rog in the mirrle of a court

Example Input: Sentence: 'the photography studio is set up very nicely outside with chairs and benches'. Replace the letter 'c' with 'y' in the sentence.
Example Output:
the photography studio is set up very niyely outside with yhairs and benyhes