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

Ex Input:
Sentence: 'a clock in the middle of a building'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a basket that is full of fruits and vegetables'. How many words contain the letter 'v' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a merry go around featuring an elephant and giraffe as well as horses'. How many words contain the letter 'z' in the sentence.

Ex Output:

0