TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a u.s. military helicopter landing or taking off'. Replace the letter 'i' with 'l' in the sentence.

SOLUTION: a u.s. mllltary hellcopter landlng or taklng off

PROBLEM: Sentence: 'man holding pair of red handled scissor in front of face'. Replace the letter 'i' with 'f' in the sentence.

SOLUTION: man holdfng pafr of red handled scfssor fn front of face

PROBLEM: Sentence: 'a couple of young people are playing a baseball game'. Replace the letter 'l' with 'j' in the sentence.

SOLUTION:
a coupje of young peopje are pjaying a basebajj game