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: 'a man and a woman sitting in the backseat as the woman talks on a cell phone'. How many words contain the letter 's' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a gray shaggy dog hanging out the driver side window of a blue minivan'. How many words contain the letter 'm' in the sentence.


Output: 1