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

Ex Input:
Sentence: 'little girl with her bunny beside her sitting on a bench'. How many words contain the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a ram standing still in an empty pasture'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a bed sitting on top of a hard wood floor below a window'. How many words contain the letter 'q' in the sentence.

Ex Output:

0