instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man sitting on a luggage cart inside of an airport'. Replace the letter 't' with 'a' in the sentence.
answer:
a man siaaing on a luggage cara inside of an airpora


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 refrigerator with both its doors open in a kitchen'. Replace the letter 'o' with 'a' in the sentence.
answer:

a refrigeratar with bath its daars apen in a kitchen