instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a person is riding a motorcycle as part of some kind of performance'. Replace the letter 'm' with 'a' in the sentence.
answer:
a person is riding a aotorcycle as part of soae kind of perforaance


question:
Sentence: 'a man is somewhat hard to be seen in the wave, on his board'. Replace the letter 's' with 'b' in the sentence.
answer:
a man ib bomewhat hard to be been in the wave, on hib board


question:
Sentence: 'a parking meter casts a crooked shadow upon a brick wall'. Replace the letter 'a' with 'k' in the sentence.
answer:

k pkrking meter cksts k crooked shkdow upon k brick wkll