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

Input: Consider Input: Sentence: 'a man sitting holding a drink with pizzas on the table'. How many words contain the letter 'k' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'an old airplane sitting on top of a field'. How many words contain the letter 'h' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a computer and a headset sit on a desk'. How many words contain the letter 's' in the sentence.


Output: 3