TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a herd of cattle standing on a lush green field'. Replace the letter 'g' with 'f' in the sentence.

SOLUTION: a herd of cattle standinf on a lush freen field

PROBLEM: Sentence: 'a man taking a photo of food on a table'. Replace the letter 't' with 'h' in the sentence.

SOLUTION: a man haking a phoho of food on a hable

PROBLEM: Sentence: 'a tennis player swings the racket back preparing to hit the ball'. Replace the letter 'h' with 'j' in the sentence.

SOLUTION:
a tennis player swings tje racket back preparing to jit tje ball