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

Input: Consider Input: Sentence: 'a man holding a tennis racquet on a tennis court'. How many words contain the letter 'w' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'many people are playing a sports video game while standing up'. How many words contain the letter 'l' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a bunch of flooded boats on a dock'. How many words contain the letter 'm' in the sentence.


Output: 0