In this task, you need to replace a letter in the sentence with another given letter.

[EX Q]: Sentence: 'a geoup of people on bicycles coming down a street'. Replace the letter 'i' with 'x' in the sentence.
[EX A]: a geoup of people on bxcycles comxng down a street

[EX Q]: Sentence: 'two children who are standing next to a white fire hydrant'. Replace the letter 't' with 'r' in the sentence.
[EX A]: rwo children who are sranding nexr ro a whire fire hydranr

[EX Q]: Sentence: 'a young boy riding a skateboard down a wooden ramp'. Replace the letter 'n' with 'x' in the sentence.
[EX A]:
a youxg boy ridixg a skateboard dowx a woodex ramp