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

Ex Input:
Sentence: 'chopsticks and oriental food in white dishes sit on a wooden table'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'group of horses in a field with a pinto in the foreground'. How many words contain the letter 'h' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a dog leaping outside to catch a frisbee'. How many words contain the letter 'n' in the sentence.

Ex Output:

1