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

Input: Consider Input: Sentence: 'small kit bathroom sink with purple walls and lights on it'. Replace the letter 'o' with 'r' in the sentence.

Output: small kit bathrrrm sink with purple walls and lights rn it


Input: Consider Input: Sentence: 'a person that is sitting under an umbrella'. Replace the letter 'a' with 'l' in the sentence.

Output: l person thlt is sitting under ln umbrelll


Input: Consider Input: Sentence: 'a person who is looking at their cell phone'. Replace the letter 'o' with 'b' in the sentence.


Output: a persbn whb is lbbking at their cell phbne