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

Ex Input:
Sentence: 'a man riding waves on his surfboard in the ocean'. How many words contain the letter 'v' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a couple of zebras are standing in a pin'. How many words contain the letter 'a' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'four players two women two men on a tennis court'. How many words contain the letter 'j' in the sentence.

Ex Output:

0