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

Ex Input:
Sentence: 'a young skateboarder is performing tricks in a driveway'. How many words contain the letter 'd' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a boy in a car on a laptop'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man sitting on top of an elephant next to a tree'. How many words contain the letter 'u' in the sentence.

Ex Output:

0