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

Ex Input:
Sentence: 'a mirror above a bathroom sink next to a window'. How many words contain the letter 'v' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a tv showing a broadcast from the weather channel'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a wooden spoon stirs vegetables cooking in a pan'. How many words contain the letter 'g' in the sentence.

Ex Output:

2