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

Ex Input:
Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'man running to catch a frisbee in a springtime park'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'there is a close up picture of a elephant standing up'. How many words contain the letter 'y' in the sentence.

Ex Output:

0