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

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

Output: 0


Input: Consider Input: Sentence: 'person standing in the grass striking a baseball with a bat'. How many words contain the letter 's' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a group of people are skiing while dressed in costumes'. How many words contain the letter 'x' in the sentence.


Output: 0