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

Ex Input:
Sentence: 'a young boy holds a baseball bat while a man stands next to him'. How many words contain the letter 'p' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man and woman holding electronic devices in their hands'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a group sits in fold up chairs on the blacktop surrounded by their gear'. How many words contain the letter 'z' in the sentence.

Ex Output:

0