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

Input: Consider Input: Sentence: 'a young pitcher throws a ball on the pitchers mound while a man in red shirt looks at him'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a couple of people that are on some skateboards'. How many words contain the letter 'o' in the sentence.

Output: 6


Input: Consider Input: Sentence: 'a woman eating a sprinkled glazed donut'. How many words contain the letter 'm' in the sentence.


Output: 1