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

[EX Q]: Sentence: 'a man is ordering food from a mobile food truck'. Replace the letter 'r' with 'q' in the sentence.
[EX A]: a man is oqdeqing food fqom a mobile food tquck

[EX Q]: Sentence: 'a fire hydrant with a message painted on it'. Replace the letter 'n' with 'j' in the sentence.
[EX A]: a fire hydrajt with a message paijted oj it

[EX Q]: Sentence: 'a man at a festival is really enjoying a loaded hotdog'. Replace the letter 'e' with 'c' in the sentence.
[EX A]:
a man at a fcstival is rcally cnjoying a loadcd hotdog