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

Input: Consider Input: Sentence: 'a large red sign on a metal pole'. How many words contain the letter 'q' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'some people standing around a line of tennis courts'. How many words contain the letter 'c' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'small purple teddy bear holding up a yellow book'. How many words contain the letter 'u' in the sentence.


Output: 2