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

Example Input: Sentence: 'a man is on a bed with a cat and laptop computer'. Replace the letter 'e' with 'n' in the sentence.
Example Output: a man is on a bnd with a cat and laptop computnr

Example Input: Sentence: 'a baseball player up to bat that just hit the ball'. Replace the letter 'r' with 'o' in the sentence.
Example Output: a baseball playeo up to bat that just hit the ball

Example Input: Sentence: 'a boat that is washed up on a beach'. Replace the letter 't' with 'e' in the sentence.
Example Output:
a boae ehae is washed up on a beach