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

Input: Consider Input: Sentence: 'a couple of lambs that are in the dirt'. How many words contain the letter 'l' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a person in a helmet riding a skateboard'. How many words contain the letter 'c' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a biscuit that someone has taken a bite out of'. How many words contain the letter 'k' in the sentence.


Output: 1