instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'busy city street with pedestrians and cars with lights all around'. Replace the letter 'r' with 'k' in the sentence.
answer:
busy city stkeet with pedestkians and caks with lights all akound

question:
Sentence: 'a skater looks ahead as he rides down a ramp'. Replace the letter 'n' with 'm' in the sentence.
answer:
a skater looks ahead as he rides dowm a ramp

question:
Sentence: 'plane on tarmac pulled up to building to allow passengers to board'. Replace the letter 'p' with 'e' in the sentence.
answer:
elane on tarmac eulled ue to building to allow eassengers to board