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

Input: Consider Input: Sentence: 'a lighthouse with birds flying by it at a bay'. How many words contain the letter 'q' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a construction worker smashes away at the roof of a building'. How many words contain the letter 'b' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'the bathroom sink counter has drawers beneath it and a mirror above'. How many words contain the letter 'v' in the sentence.
Output: 1