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

Input: Consider Input: Sentence: 'a cat is watching a computer with a video of a cat'. Replace the letter 't' with 'a' in the sentence.

Output: a caa is waaching a compuaer wiah a video of a caa


Input: Consider Input: Sentence: 'a woman gives a thumbs up sign while sitting in front of a sandwich'. Replace the letter 's' with 'h' in the sentence.

Output: a woman giveh a thumbh up hign while hitting in front of a handwich


Input: Consider Input: Sentence: 'a blanket covered with various teddy bears and stuffed animals'. Replace the letter 'a' with 's' in the sentence.


Output: s blsnket covered with vsrious teddy besrs snd stuffed snimsls