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

Input: Consider Input: Sentence: 'man running to catch a frisbee in a springtime park'. How many words contain the letter 'j' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a cat is laying in a piece of luggage'. How many words contain the letter 'p' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'a couple of people riding skis and a snowboard'. How many words contain the letter 'r' in the sentence.
Output: 2