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

Example Input: Sentence: 'a man rides a black motorcycle around a curve'. How many words contain the letter 'y' in the sentence.
Example Output: 1

Example Input: Sentence: 'he wants everyone to know that he has serious intentions for the tennis game'. How many words contain the letter 'h' in the sentence.
Example Output: 5

Example Input: Sentence: 'a man in a wet suit holding a surfboard while heading for the ocean waves'. How many words contain the letter 'y' in the sentence.
Example Output:
0