TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a boy on the beach playing with a frisbee'. Replace the letter 'h' with 'e' in the sentence.

SOLUTION: a boy on tee beace playing wite a frisbee

PROBLEM: Sentence: 'a couple of giraffe standing next to each other in a forest'. Replace the letter 'a' with 'w' in the sentence.

SOLUTION: w couple of girwffe stwnding next to ewch other in w forest

PROBLEM: Sentence: 'two women smiling together, one holds a stuffed animal the other has a stuffed animal on her shoulder'. Replace the letter 'o' with 'r' in the sentence.

SOLUTION:
twr wrmen smiling trgether, rne hrlds a stuffed animal the rther has a stuffed animal rn her shrulder