TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a baseball player running on a baseball field'. Replace the letter 'e' with 'h' in the sentence.

SOLUTION: a bashball playhr running on a bashball fihld

PROBLEM: Sentence: 'a long green grain traveling past a white building'. Replace the letter 'w' with 'o' in the sentence.

SOLUTION: a long green grain traveling past a ohite building

PROBLEM: Sentence: 'three giraffes standing in an area with grass, shrubs, and trees'. Replace the letter 't' with 'c' in the sentence.

SOLUTION:
chree giraffes scanding in an area wich grass, shrubs, and crees