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 horses standing next to each other on a field'. How many words contain the letter 'q' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a man with a skateboard up in air at a skateboard park'. How many words contain the letter 's' in the sentence.

Output: 2

Input: Consider Input: Sentence: 'a city bus prepares to stop at a bus stop at night'. How many words contain the letter 'w' in the sentence.
Output: 0