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

Ex Input:
Sentence: 'skate boarder trying to maintain his balance during stunt'. How many words contain the letter 'w' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a white cat looking in a rectangular mirror in a female bedroom'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a bathroom vanity sink with person products around it'. How many words contain the letter 'v' in the sentence.

Ex Output:

1