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

Input: Consider Input: Sentence: 'a person eating a slice of pizza on a table'. How many words contain the letter 'z' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a giraffe biting into a tree branch with great ferocity'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a group of people at a dinner table while looking up'. How many words contain the letter 'z' in the sentence.


Output: 0