In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a couple walking down a sidewalk next to some graffiti'. Replace the letter 'a' with 'y' in the sentence.

Answer: y couple wylking down y sidewylk next to some gryffiti


Question: Sentence: 'a yellow fire truck parked in a parking lot'. Replace the letter 'a' with 'y' in the sentence.

Answer: y yellow fire truck pyrked in y pyrking lot


Question: Sentence: 'a toaster oven on a counter is open with a tray of muffins in it, with two muffins on plates to the side'. Replace the letter 'o' with 'h' in the sentence.

Answer:
a thaster hven hn a chunter is hpen with a tray hf muffins in it, with twh muffins hn plates th the side