instruction:
In this task, you need to replace a letter in the sentence with another given letter.
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 living room with a wooden table next to a kitchen'. Replace the letter 'e' with 'c' in the sentence.
answer:
a living room with a woodcn tablc ncxt to a kitchcn

question:
Sentence: 'a man is standing at the base ball triangle with bat in tow'. Replace the letter 'n' with 'c' in the sentence.
answer:
a mac is stacdicg at the base ball triacgle with bat ic tow