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

Ex Input:
Sentence: 'a bus station full of people walking on the side walk'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man that is sitting on a horse in the grass'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a busy city street filled with people and cars'. How many words contain the letter 'l' in the sentence.

Ex Output:

2