TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man that is on the back of an elephant'. Replace the letter 'c' with 'd' in the sentence.

SOLUTION: a man that is on the badk of an elephant

PROBLEM: Sentence: 'a man riding a snowboard on the side of a wall'. Replace the letter 'm' with 'p' in the sentence.

SOLUTION: a pan riding a snowboard on the side of a wall

PROBLEM: Sentence: 'a large white bowl filled with bananas and tangerines'. Replace the letter 'o' with 'r' in the sentence.

SOLUTION:
a large white brwl filled with bananas and tangerines