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

Example Input: Sentence: 'a bunch of cloths are piled in the sink'. How many words contain the letter 'w' in the sentence.
Example Output: 0

Example Input: Sentence: 'a kitchen filled with appliances and furniture next to windows'. How many words contain the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'several people with backpacks waiting to get on a bus'. How many words contain the letter 'z' in the sentence.
Example Output:
0