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

Input: Consider Input: Sentence: 'a colorful stuffed bear sits on a purple outdoor bench'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a large clock tower under a grey cloudy sky'. How many words contain the letter 'l' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a lot of bananas next to a sale sign at a market'. How many words contain the letter 'f' in the sentence.


Output: 1