TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a couple giraffes walking through a fielded area'. Replace the letter 'e' with 'c' in the sentence.

SOLUTION: a couplc giraffcs walking through a ficldcd arca

PROBLEM: Sentence: 'a painting of scissors going to cut a chain with a lock'. Replace the letter 'g' with 'v' in the sentence.

SOLUTION: a paintinv of scissors voinv to cut a chain with a lock

PROBLEM: Sentence: 'five children on a baseball team standing at a park'. Replace the letter 'm' with 'b' in the sentence.

SOLUTION:
five children on a baseball teab standing at a park