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

Ex Input:
Sentence: 'some people are sitting around a black table'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a girl laying on a couch with a bird on her head'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a person that is flying a hamburger kite'. How many words contain the letter 'b' in the sentence.

Ex Output:

1