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

Example Input: Sentence: 'a girl is ready to serve the ball on a clay court'. How many words contain the letter 'd' in the sentence.
Example Output: 1

Example Input: Sentence: 'a close up of a business sign on a building'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'a group of women sitting around a table with a pizza on a  pan'. How many words contain the letter 'c' in the sentence.
Example Output:
0