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

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

Example Input: Sentence: 'living room that has boxes packed for moving'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a stuffed elephant is resting on a chair'. How many words contain the letter 'q' in the sentence.
Example Output:
0