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

Example Input: Sentence: 'a cat is walking on a wooden deck in the snow'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a little boy learning to throw a frisbee'. How many words contain the letter 'h' in the sentence.
Example Output: 1

Example Input: Sentence: 'a person holding a chocolate donut with chocolate frosting and sprinkles on it'. How many words contain the letter 'f' in the sentence.
Example Output:
1