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 pair of tennis players on a tennis court'. How many words contain the letter 'u' in the sentence.
Example Output: 1

Example Input: Sentence: 'a couple is fast asleep at 3 in the morning'. How many words contain the letter 'y' in the sentence.
Example Output:
0