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

Input: Consider Input: Sentence: 'a cellphone mounted to a dashboard of a car'. How many words contain the letter 'p' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'people in different boats rowing around a lake'. How many words contain the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a large group of cows eat hay through a barrier while people look on'. How many words contain the letter 'v' in the sentence.


Output: 0