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 man that is sitting on a horse in the grass'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a woman standing with a statute of a pink elephant in glasses'. How many words contain the letter 'w' in the sentence.

Ex Output:

2