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

Example Input: Sentence: 'you are never to old to play with the nintendo wii'. Replace the letter 'e' with 'v' in the sentence.
Example Output: you arv nvvvr to old to play with thv nintvndo wii

Example Input: Sentence: 'a person that is sitting under an umbrella'. Replace the letter 'a' with 'l' in the sentence.
Example Output: l person thlt is sitting under ln umbrelll

Example Input: Sentence: 'a woman sitting at a table drinking a glass of wine'. Replace the letter 'g' with 'v' in the sentence.
Example Output:
a woman sittinv at a table drinkinv a vlass of wine