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 people that are on some skateboards'. How many words contain the letter 'o' in the sentence.

Output: 6


Input: Consider Input: Sentence: 'a car stopped at a red light at an intersection'. How many words contain the letter 'l' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a clock in the middle of a building'. How many words contain the letter 'x' in the sentence.


Output: 0