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

Ex Input:
Sentence: 'a man paddle boarding in the middle of the ocean'. How many words contain the letter 'i' in the sentence.

Ex Output:
3


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: 'people with skis are standing in the snow'. How many words contain the letter 'o' in the sentence.

Ex Output:

2