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

Example Input: Sentence: 'a baseball player in the middle of a swing'. How many words contain the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'people standing in a river surrounding an elephant some are touching it'. How many words contain the letter 'd' in the sentence.
Example Output: 2

Example Input: Sentence: 'a man sitting on a tailgate beside a surf board'. How many words contain the letter 'q' in the sentence.
Example Output:
0