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

Input: Consider Input: Sentence: 'two hotdogs on with various toppings and a drink on a counter'. How many words contain the letter 'w' in the sentence.

Output: 2

Input: Consider Input: Sentence: 'a bench is in the ocean water with a fishing pole'. How many words contain the letter 'm' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a bowl of cereal with raspberries is sitting on a counter'. How many words contain the letter 'k' in the sentence.
Output: 0