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

Input: Consider Input: Sentence: 'a man holding a frisbee above a crowd of young men'. How many words contain the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a zebra standing still in the grass near a tree'. How many words contain the letter 'w' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a glass mirror cabinet is above the small bathroom sink'. How many words contain the letter 'i' in the sentence.


Output: 4