In this task, you need to count the number of words in a sentence that contain the given letter

Example Input: Sentence: 'a group of people holding kites walking on a beach'. How many words contain the letter 'x' in the sentence.
Example Output: 0

Example Input: Sentence: 'a living room filled with furniture and a large wooden shelf'. How many words contain the letter 'e' in the sentence.
Example Output: 5

Example Input: Sentence: 'a man in a living room is taking the cushion off of an ottoman'. How many words contain the letter 'u' in the sentence.
Example Output:
1