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

Ex Input:
Sentence: 'a woman sitting on top of a cement bench near a lake'. How many words contain the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a sleek and pointy fighter jet flying in the sky'. How many words contain the letter 'f' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'people stand around a store near the sidewalk sectioned off with ribbon'. How many words contain the letter 'h' in the sentence.

Ex Output:

2