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: 'a table with three different plates and several drinks on it'. Replace the letter 't' with 'x' in the sentence.

SOLUTION: a xable wixh xhree differenx plaxes and several drinks on ix

PROBLEM: Sentence: 'a plate with various sashimi and breads on it'. Replace the letter 'i' with 'b' in the sentence.

SOLUTION:
a plate wbth varbous sashbmb and breads on bt