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

Example Input: Sentence: 'a girl laying on a couch with a bird on her head'. How many words contain the letter 'v' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man holding a racquet hits a tennis ball'. How many words contain the letter 'v' in the sentence.
Example Output: 0

Example Input: Sentence: 'a young man attempting to fly a kite on a forest hillside'. How many words contain the letter 'f' in the sentence.
Example Output:
2