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

Input: Consider Input: Sentence: 'a jet airliner carrying a small shuttle above it'. How many words contain the letter 'r' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a couple poses under a banner of a turkey'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a ginger colored cat sits on a white chair'. How many words contain the letter 'i' in the sentence.


Output: 4