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

Ex Input:
Sentence: 'an old motorcycle with the seat missing parked in a garage with other parts and motorcycles'. How many words contain the letter 'r' in the sentence.

Ex Output:
6


Ex Input:
Sentence: 'a herd of giraffe grazing from a feeder'. How many words contain the letter 'h' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man with his cats lying in bed'. How many words contain the letter 'f' in the sentence.

Ex Output:

0