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

Example Input: Sentence: 'a man paddle boarding in the middle of the ocean'. How many words contain the letter 'i' in the sentence.
Example Output: 3

Example Input: Sentence: 'a pizza pie is on a wooden serving tray'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'a woman in blue shorts grass trees and a frisbee'. How many words contain the letter 'l' in the sentence.
Example Output:
1