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

Example Input: Sentence: 'a woman surfer is on an ocean wave'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'a lighthouse with birds flying by it at a bay'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'two laptops sitting on a desk both appear to be apples'. How many words contain the letter 'w' in the sentence.
Example Output:
1