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

Input: Consider Input: Sentence: 'a bus station full of people walking on the side walk'. How many words contain the letter 'q' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'two skiers standing side by side in the snow posing for a picture'. How many words contain the letter 'u' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'this bathroom has a ver large mirror and granite top'. How many words contain the letter 'x' in the sentence.


Output: 0