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

Sentence: 'a yellow fire truck parked in a parking lot'. Replace the letter 'a' with 'y' in the sentence.
y yellow fire truck pyrked in y pyrking lot

Sentence: 'a gray and white cat sleeping on top of a laptop computer'. Replace the letter 'l' with 'g' in the sentence.
a gray and white cat sgeeping on top of a gaptop computer

Sentence: 'a man eats food that is inside a banana peel'. Replace the letter 'n' with 'k' in the sentence.

a mak eats food that is ikside a bakaka peel