In this task, you need to replace a letter in the sentence with another given letter.

[EX Q]: Sentence: 'a bike sitting parked next to a cart in front of some boxes'. Replace the letter 't' with 'x' in the sentence.
[EX A]: a bike sixxing parked nexx xo a carx in fronx of some boxes

[EX Q]: Sentence: 'a couple of people that are petting a horse'. Replace the letter 'e' with 'p' in the sentence.
[EX A]: a couplp of ppoplp that arp pptting a horsp

[EX Q]: Sentence: 'a dog laying down on top of a couch cushion'. Replace the letter 'd' with 'w' in the sentence.
[EX A]:
a wog laying wown on top of a couch cushion