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

Ex Input:
Sentence: 'a persons desk with a computer and many books in a case behind it'. How many words contain the letter 'd' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a person standing in the kitchen with an object in hand'. How many words contain the letter 't' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'a bunch of zebras are in a field'. How many words contain the letter 'y' in the sentence.

Ex Output:

0