TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a young boy riding his skateboard down the sidewalk'. Replace the letter 'd' with 'p' in the sentence.

SOLUTION: a young boy riping his skateboarp pown the sipewalk

PROBLEM: Sentence: 'a street light is near a large building'. Replace the letter 'n' with 'c' in the sentence.

SOLUTION: a street light is cear a large buildicg

PROBLEM: Sentence: 'empty wooden bench with piles of twigs in front of some parked cars'. Replace the letter 's' with 'i' in the sentence.

SOLUTION:
empty wooden bench with pilei of twigi in front of iome parked cari