TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a woman is snowboarding down a snowy hill'. Replace the letter 'l' with 'b' in the sentence.

SOLUTION: a woman is snowboarding down a snowy hibb

PROBLEM: Sentence: 'two giraffe standing in an enclosure at the zoo next to a  tree'. Replace the letter 'n' with 'g' in the sentence.

SOLUTION: two giraffe stagdigg ig ag egclosure at the zoo gext to a  tree

PROBLEM: Sentence: 'a group of tv remotes and a wii mote lined up'. Replace the letter 'u' with 'f' in the sentence.

SOLUTION:
a grofp of tv remotes and a wii mote lined fp