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

Ex Input:
Sentence: 'a van follows behind a bus on a rural road'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'people are parked along side the road by pay here signs'. How many words contain the letter 'a' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'a little girl with a cookie in her mouth'. How many words contain the letter 'g' in the sentence.

Ex Output:

1