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

Example Input: Sentence: 'a man using an outdoor oven to cook a pizza'. How many words contain the letter 'f' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man skiing through a snowcovered street area'. How many words contain the letter 'p' in the sentence.
Example Output: 0

Example Input: Sentence: 'a few people are in single file on their skies'. How many words contain the letter 'k' in the sentence.
Example Output:
1