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

[EX Q]: Sentence: 'a fancy clock is lit up on the street'. Replace the letter 'o' with 'f' in the sentence.
[EX A]: a fancy clfck is lit up fn the street

[EX Q]: Sentence: 'a crowd stands under a set of lights in the ceiling and one person holds up a cell phone'. Replace the letter 'r' with 'f' in the sentence.
[EX A]: a cfowd stands undef a set of lights in the ceiling and one pefson holds up a cell phone

[EX Q]: Sentence: 'people standing near luggage placed on the floor'. Replace the letter 'l' with 'b' in the sentence.
[EX A]:
peopbe standing near buggage pbaced on the fboor