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

Example Input: Sentence: 'a van follows behind a bus on a rural road'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a sign reading butt street on the corner of a building with a no parking sign below it'. How many words contain the letter 'h' in the sentence.
Example Output: 2

Example Input: Sentence: 'a pizza sitting on a table next to a beer'. How many words contain the letter 'z' in the sentence.
Example Output:
1