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: 'snow boarder in midflight inverted with a steep snowy slope in the background'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a smart phone sitting inside of a red pouch'. How many words contain the letter 'o' in the sentence.

Ex Output:

3