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

Input: Consider Input: Sentence: 'a room with a mirror and a desk with a monitor'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a smiling  woman wearing a hat holds up a snowboard'. How many words contain the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man sitting in front of a microphone at a table'. How many words contain the letter 'm' in the sentence.


Output: 2