TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man holding a baseball bat wearing a baseball uniform'. Replace the letter 'f' with 'h' in the sentence.

SOLUTION: a man holding a baseball bat wearing a baseball unihorm

PROBLEM: Sentence: 'the man is skiing fast in the snow'. Replace the letter 'o' with 'x' in the sentence.

SOLUTION: the man is skiing fast in the snxw

PROBLEM: Sentence: 'a man walking on rocks carrying a surfboard'. Replace the letter 'k' with 't' in the sentence.

SOLUTION:
a man walting on rocts carrying a surfboard