TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a toilet in a bathroom with small white tile on the floor'. Replace the letter 'a' with 'p' in the sentence.

SOLUTION: p toilet in p bpthroom with smpll white tile on the floor

PROBLEM: Sentence: 'a brown door  that says gentlemen and a toilet'. Replace the letter 'o' with 'f' in the sentence.

SOLUTION: a brfwn dffr  that says gentlemen and a tfilet

PROBLEM: Sentence: 'a young male skateboarding on a railing in a skate park'. Replace the letter 'r' with 'm' in the sentence.

SOLUTION:
a young male skateboamding on a mailing in a skate pamk