TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a police officer on a horse is riding down the street'. Replace the letter 'h' with 'a' in the sentence.

SOLUTION: a police officer on a aorse is riding down tae street

PROBLEM: Sentence: 'a child watching television changing the station with a remote'. Replace the letter 'n' with 'z' in the sentence.

SOLUTION: a child watchizg televisioz chazgizg the statioz with a remote

PROBLEM: Sentence: 'a small child sleeping in a toddler bed with a pink bed set'. Replace the letter 'a' with 'k' in the sentence.

SOLUTION:
k smkll child sleeping in k toddler bed with k pink bed set