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

Ex Input:
Sentence: 'a man with a surfboard walking across a bridge towards the ocean'. How many words contain the letter 'w' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a woman is standing at a fruit stand'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'small boy standing on skateboard inside the house'. How many words contain the letter 'c' in the sentence.

Ex Output:

0