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

Ex Input:
Sentence: 'a man herding brown colored animals with a dog'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man showing a piece of hardware he took apart'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a person taking a picture of a sandwich sitting on a cutting board'. How many words contain the letter 'c' in the sentence.

Ex Output:

3