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

Ex Input:
Sentence: 'a small terrier stands in the open suitcase ready to go'. How many words contain the letter 'l' 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 man using an outdoor oven to cook a pizza'. How many words contain the letter 'f' in the sentence.

Ex Output:

0