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

Input: Consider Input: Sentence: 'a close up of a street sign that is not in english'. How many words contain the letter 'p' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a close up of two black cows grazing the grass'. How many words contain the letter 'u' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a boy holds his surfboard and contemplates the surf on a crowded beach'. How many words contain the letter 'm' in the sentence.


Output: 1