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

Input: Consider Input: Sentence: 'a herd of zebra grazing in a lush green field'. Replace the letter 'h' with 'j' in the sentence.

Output: a jerd of zebra grazing in a lusj green field

Input: Consider Input: Sentence: 'a man is at bat at a baseball game with a crowd watching'. Replace the letter 't' with 'f' in the sentence.

Output: a man is af baf af a baseball game wifh a crowd wafching

Input: Consider Input: Sentence: 'a baseball player hitting the ball in a game'. Replace the letter 'i' with 'h' in the sentence.
Output: a baseball player hhtthng the ball hn a game