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

Input: Consider Input: Sentence: 'a woman is laughing while sitting on a bed'. How many words contain the letter 'c' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a large pizza smothered in cheese and sauce'. How many words contain the letter 'a' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a couple of blue street signs on a pole'. How many words contain the letter 'i' in the sentence.


Output: 1