instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.
answer:
a bunsh of signs on a pole on the street


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


question:
Sentence: 'a pile of different colored vegetables sitting on a  table'. Replace the letter 'a' with 'm' in the sentence.
answer:

m pile of different colored vegetmbles sitting on m  tmble