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

[EX Q]: Sentence: 'a book shelf full of books and nick nacks '. Replace the letter 'o' with 'm' in the sentence.
[EX A]: a bmmk shelf full mf bmmks and nick nacks 

[EX Q]: Sentence: 'a man on a skateboard jumping down a short flight of stairs'. Replace the letter 'o' with 'j' in the sentence.
[EX A]: a man jn a skatebjard jumping djwn a shjrt flight jf stairs

[EX Q]: Sentence: 'an empty street intersection on a foggy day'. Replace the letter 't' with 'r' in the sentence.
[EX A]:
an empry srreer inrersecrion on a foggy day