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

Ex Input:
Sentence: 'a silver television a black couch a table and some ceiling fans'. How many words contain the letter 's' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a woman sitting in a chair next to a tea table in the woods'. How many words contain the letter 'i' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a large clock with roman numerals on it'. How many words contain the letter 'v' in the sentence.

Ex Output:

0