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

Ex Input:
Sentence: 'the view from the top of a ski slope'. How many words contain the letter 'r' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'cars parked on the side of the road beside a fire hydrant'. How many words contain the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a remote control jokingly entitled control a woman'. How many words contain the letter 'x' in the sentence.

Ex Output:

0