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

Ex Input:
Sentence: 'a group of people standing together talking '. How many words contain the letter 'b' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a room with a small light in the middle with a computer'. How many words contain the letter 's' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'expensive headphones resting between two white and black laptops'. How many words contain the letter 'p' in the sentence.

Ex Output:
3