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

Example Input: Sentence: 'a pile of stuffed brown teddy bears wearing clothing'. How many words contain the letter 'w' in the sentence.
Example Output: 2

Example Input: Sentence: 'two green metal street signs with spanish words on it'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a young man dressed like a pirate on a skateboard'. How many words contain the letter 'a' in the sentence.
Example Output:
6