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

Input: Consider Input: Sentence: 'two cats stand beside a pink door and potted plants'. How many words contain the letter 'z' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a fire hydrant on a neighborhood street with trees and shrubs around it'. How many words contain the letter 'k' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a sandwich shop with cars parked in front of it'. How many words contain the letter 'u' in the sentence.
Output: 0