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

[EX Q]: Sentence: 'a cat is watching a computer with a video of a cat'. Replace the letter 't' with 'a' in the sentence.
[EX A]: a caa is waaching a compuaer wiah a video of a caa

[EX Q]: Sentence: 'a boy is sitting at a dinner table with his food'. Replace the letter 't' with 'r' in the sentence.
[EX A]: a boy is sirring ar a dinner rable wirh his food

[EX Q]: Sentence: 'a picture of a street sign with various posts on it'. Replace the letter 't' with 'r' in the sentence.
[EX A]:
a picrure of a srreer sign wirh various posrs on ir