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

Input: Consider Input: Sentence: 'there is a person awaiting to cross this street'. How many words contain the letter 'a' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a man with a long coat and a hat skating on the road'. How many words contain the letter 'q' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a man and woman are posing with tennis racquets'. How many words contain the letter 'p' in the sentence.


Output: 1