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

Input: Consider Input: Sentence: 'a bench is in the ocean water with a fishing pole'. How many words contain the letter 'm' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'four white and blue street signs on a wooden pole'. How many words contain the letter 'u' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a refrigerator that has various stickers on it'. How many words contain the letter 'w' in the sentence.


Output: 0