TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a cat sits on the floor next to a purse'. Replace the letter 'a' with 'b' in the sentence.

SOLUTION: b cbt sits on the floor next to b purse

PROBLEM: Sentence: 'the child is throwing the frisbee through the hoop'. Replace the letter 't' with 'm' in the sentence.

SOLUTION: mhe child is mhrowing mhe frisbee mhrough mhe hoop

PROBLEM: Sentence: 'one pan is still on the stove after the other dishes have been washed'. Replace the letter 'd' with 'l' in the sentence.

SOLUTION:
one pan is still on the stove after the other lishes have been washel