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

Ex Input:
Sentence: 'a young person flying through the air while riding a skateboard'. How many words contain the letter 'd' in the sentence.

Ex Output:
2

Ex Input:
Sentence: 'a woman poses with a large teddy bear'. How many words contain the letter 'u' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a bathroom with a wood door and a toilet tissue holder'. How many words contain the letter 'i' in the sentence.

Ex Output:
3