instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man is ordering food from a mobile food truck'. Replace the letter 'r' with 'q' in the sentence.
answer:
a man is oqdeqing food fqom a mobile food tquck


question:
Sentence: 'a couple of men playing a  game of tennis'. Replace the letter 'n' with 'c' in the sentence.
answer:
a couple of mec playicg a  game of teccis


question:
Sentence: 'a small fishing boat in the ocean '. Replace the letter 'a' with 'n' in the sentence.
answer:

n smnll fishing bont in the ocenn