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

Ex Input:
Sentence: 'a woman standing in the dirt looking up at an elephant'. How many words contain the letter 'b' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a toilet sits in the middle of a street'. How many words contain the letter 'b' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'ladies playing a video game and having fun'. How many words contain the letter 'q' in the sentence.

Ex Output:

0