TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'two stuffed animal bears  sitting next to a candy bar and a flower pot on a table'. Replace the letter 'd' with 'w' in the sentence.

SOLUTION: two stuffew animal bears  sitting next to a canwy bar anw a flower pot on a table

PROBLEM: Sentence: 'a photo of a river with a train bridge across it'. Replace the letter 'r' with 'f' in the sentence.

SOLUTION: a photo of a fivef with a tfain bfidge acfoss it

PROBLEM: Sentence: 'a man on a bicycle has an old fashion vehicle behind him'. Replace the letter 'h' with 'p' in the sentence.

SOLUTION:
a man on a bicycle pas an old faspion vepicle bepind pim