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

Ex Input:
Sentence: 'a large pizza smothered in cheese and sauce'. How many words contain the letter 'a' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'a road cut off by police barricade tape'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man on a skateboard jumping onto a concrete bench'. How many words contain the letter 'i' in the sentence.

Ex Output:

1