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

Input: Consider Input: Sentence: 'a black and white photo of a very crowded tropical beach'. How many words contain the letter 'p' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a little boy learning to throw a frisbee'. How many words contain the letter 'h' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a close up of a cake on a table near a box of cookies'. How many words contain the letter 'r' in the sentence.


Output: 1