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

[EX Q]: Sentence: 'a brown door  that says gentlemen and a toilet'. Replace the letter 'o' with 'f' in the sentence.
[EX A]: a brfwn dffr  that says gentlemen and a tfilet

[EX Q]: Sentence: 'a tennis player wearing black shorts and blue shirt swinging at the ball'. Replace the letter 'w' with 'o' in the sentence.
[EX A]: a tennis player oearing black shorts and blue shirt soinging at the ball

[EX Q]: Sentence: 'a train driving pass another train at a train station'. Replace the letter 'p' with 'n' in the sentence.
[EX A]:
a train driving nass another train at a train station