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

Example Input: Sentence: 'a bunch of cloths are piled in the sink'. How many words contain the letter 'w' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man sitting holding a drink with pizzas on the table'. How many words contain the letter 'k' in the sentence.
Example Output: 1

Example Input: Sentence: 'a crowd of skiers gathers on the top of the slopes'. How many words contain the letter 'k' in the sentence.
Example Output:
1