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

Input: Consider Input: Sentence: 'skate boarder trying to maintain his balance during stunt'. How many words contain the letter 'w' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a man riding a snowboard down the side of a snow covered slope'. How many words contain the letter 'c' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'there is a person outside near a red fire hydrant'. How many words contain the letter 'p' in the sentence.


Output: 1