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

Input: Consider Input: Sentence: 'people are parked along side the road by pay here signs'. How many words contain the letter 'a' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a group of people holding kites walking on a beach'. How many words contain the letter 'x' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a man coming out of a bathroom standing near a woman brushing her teeth'. How many words contain the letter 'w' in the sentence.


Output: 1