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

Example Input: Sentence: 'a sleek and pointy fighter jet flying in the sky'. How many words contain the letter 'f' in the sentence.
Example Output: 2

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: 'under a couple of umbrellas with clear blue skies'. How many words contain the letter 'u' in the sentence.
Example Output:
4