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

Example Input: Sentence: 'people fly kites and relax at a crowded sunlit beach'. How many words contain the letter 'l' in the sentence.
Example Output: 4

Example Input: Sentence: 'a pair of people swimming out to sea on some surfboards'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'a worn wooden bench and chair in front of a red wall'. How many words contain the letter 'z' in the sentence.
Example Output:
0