TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a girl sitting in a chair eating a slice of pizza'. Replace the letter 'i' with 'x' in the sentence.

SOLUTION: a gxrl sxttxng xn a chaxr eatxng a slxce of pxzza

PROBLEM: Sentence: 'a batter is batting at a baseball game'. Replace the letter 'b' with 'e' in the sentence.

SOLUTION: a eatter is eatting at a easeeall game

PROBLEM: Sentence: 'a stainless steel microwave open and sitting on a bathroom floor'. Replace the letter 'o' with 'k' in the sentence.

SOLUTION:
a stainless steel micrkwave kpen and sitting kn a bathrkkm flkkr