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

[Q]: Sentence: 'a man is at bat at a baseball game with a crowd watching'. Replace the letter 't' with 'f' in the sentence.
[A]: a man is af baf af a baseball game wifh a crowd wafching

[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.
[A]: a cfowd stands undef a set of lights in the ceiling and one pefson holds up a cell phone

[Q]: Sentence: 'a young child holding a tennis racket in his hand'. Replace the letter 'r' with 'k' in the sentence.
[A]:
a young child holding a tennis kacket in his hand