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

Ex Input:
Sentence: 'a woman standing next to two baby elephants'. How many words contain the letter 'y' in the sentence.

Ex Output:
1


Ex 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.

Ex Output:
0


Ex Input:
Sentence: 'a bowl of oranges on a dining table'. How many words contain the letter 'v' in the sentence.

Ex Output:

0