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: 'an elephant near a man sitting down'. How many words contain the letter 'y' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a stop sign on right side of brick street with a person crossing it'. How many words contain the letter 'e' in the sentence.


Output: 3