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

Input: Consider Input: Sentence: 'there are trains that are on the train track'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'horses standing and laying down in the grass on a hill above a lake'. How many words contain the letter 'g' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a plate of food with bacon avocado and bread on it'. How many words contain the letter 'x' in the sentence.


Output: 0