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 men sitting by tables working on laptops'. How many words contain the letter 'l' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a person skiing down part of a marked race course'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'woman with bandages and tubing laying on a bed'. How many words contain the letter 'x' in the sentence.

Ex Output:

0