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

Ex Input:
Sentence: 'a young man in a bunch of waves on his board'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'people fly kites and relax at a crowded sunlit beach'. How many words contain the letter 'l' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'this is a photo of someone holding a cell phone'. How many words contain the letter 'n' in the sentence.

Ex Output:

3