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

Input: Consider Input: Sentence: 'a woman sitting in a chair next to a tea table in the woods'. How many words contain the letter 'i' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a large jetliner with a space shuttle on its back next to a fighter jet'. How many words contain the letter 'm' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a black and white photograph of a stop sign on a snowy night'. How many words contain the letter 'n' in the sentence.


Output: 5