TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a hipster riding a skateboard up the side of a wall'. Replace the letter 's' with 'm' in the sentence.

SOLUTION: a hipmter riding a mkateboard up the mide of a wall

PROBLEM: Sentence: 'television and vcr console flanked by tan leather recliner and white plastic cube side table'. Replace the letter 'c' with 'j' in the sentence.

SOLUTION: television and vjr jonsole flanked by tan leather rejliner and white plastij jube side table

PROBLEM: Sentence: 'a bear is walking down a grass path'. Replace the letter 'i' with 'd' in the sentence.

SOLUTION:
a bear ds walkdng down a grass path