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

Example Input: Sentence: 'a man sitting holding a drink with pizzas on the table'. How many words contain the letter 'k' in the sentence.
Example Output: 1

Example Input: Sentence: 'a cat sitting on a wooden chair look at the camera'. How many words contain the letter 'd' in the sentence.
Example Output: 1

Example Input: Sentence: 'the bird is walking beside a bull with dark horns'. How many words contain the letter 's' in the sentence.
Example Output:
3