TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a pizza sitting on top of a metal pizza pan'. Replace the letter 'p' with 't' in the sentence.

SOLUTION: a tizza sitting on tot of a metal tizza tan

PROBLEM: Sentence: 'a hand held game or older cell phone'. Replace the letter 'o' with 'c' in the sentence.

SOLUTION: a hand held game cr clder cell phcne

PROBLEM: Sentence: 'a cat staring at a camera laying on a floor next to a shoe'. Replace the letter 'i' with 'n' in the sentence.

SOLUTION:
a cat starnng at a camera laynng on a floor next to a shoe