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 small terrier stands in the open suitcase ready to go'. How many words contain the letter 'l' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'an image of an old fashioned and clean kitchen'. How many words contain the letter 'q' in the sentence.
Output: 0