TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'there are people camping and flying kites in a field'. Replace the letter 't' with 'j' in the sentence.

SOLUTION: jhere are people camping and flying kijes in a field

PROBLEM: Sentence: 'a man in black shirt laying on bed with a teddy bear'. Replace the letter 'd' with 'b' in the sentence.

SOLUTION: a man in black shirt laying on beb with a tebby bear

PROBLEM: Sentence: 'a usaf plane with a star logo on a grassy field'. Replace the letter 'l' with 'y' in the sentence.

SOLUTION:
a usaf pyane with a star yogo on a grassy fieyd