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

[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: 'a close up of a bathroom sink with soap and tooth brushes in a cup'. Replace the letter 't' with 'y' in the sentence.
[EX A]: a close up of a bayhroom sink wiyh soap and yooyh brushes in a cup

[EX Q]: Sentence: 'box full of food with lots of vegetables and fruit'. Replace the letter 'u' with 'c' in the sentence.
[EX A]:
box fcll of food with lots of vegetables and frcit