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

Input: Consider Input: Sentence: 'a hotdog is in a bun covered in cheese'. How many words contain the letter 'q' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'sitting room with couch and entertainment system in cabinets'. How many words contain the letter 'e' in the sentence.

Output: 3

Input: Consider Input: Sentence: 'a black and white cow standing next to a metal fence'. How many words contain the letter 'b' in the sentence.
Output: 1