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

Example Input: Sentence: 'there is a plate if food with broccoli fish and a baked potato'. How many words contain the letter 'k' in the sentence.
Example Output: 1

Example Input: Sentence: 'a close up of a street sign that is not in english'. How many words contain the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'a close up of a cat on a couch'. How many words contain the letter 'b' in the sentence.
Example Output:
0