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

Example Input: Sentence: 'a baseball player swings his bat at a pitch'. Replace the letter 's' with 'l' in the sentence.
Example Output: a baleball player lwingl hil bat at a pitch

Example Input: Sentence: 'wine is being poured into a wine glass with a syringe'. Replace the letter 'e' with 'y' in the sentence.
Example Output: winy is bying pouryd into a winy glass with a syringy

Example Input: Sentence: 'a bench that is looking out toward the street'. Replace the letter 't' with 'o' in the sentence.
Example Output:
a bench ohao is looking ouo ooward ohe soreeo