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

Example Input: Sentence: 'little girl with her bunny beside her sitting on a bench'. How many words contain the letter 'w' in the sentence.
Example Output: 1

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: 'an airplane sits on the ground with many other planes'. How many words contain the letter 'y' in the sentence.
Example Output:
1