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

Input: Consider Input: Sentence: 'five sheep out in an open field eating straw'. How many words contain the letter 'd' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a group of people standing together talking '. How many words contain the letter 'b' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a black cat sits in a bathroom sink cuddling a hair dryer'. How many words contain the letter 'u' in the sentence.


Output: 1