instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a woman walks by with a large suitcase and a polka dot umbrella'. Replace the letter 'e' with 'n' in the sentence.
answer:
a woman walks by with a largn suitcasn and a polka dot umbrnlla


question:
Sentence: 'a toaster oven painted on the side of a wall'. Replace the letter 'e' with 'p' in the sentence.
answer:
a toastpr ovpn paintpd on thp sidp of a wall


question:
Sentence: 'a stop sign at a corner of a town'. Replace the letter 't' with 'e' in the sentence.
answer:

a seop sign ae a corner of a eown