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

Ex Input:
Sentence: 'a black and white photo of a large clock on a building'. How many words contain the letter 't' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a name and clock lit up at night'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a large bus and a man on a motor bike'. How many words contain the letter 'k' in the sentence.

Ex Output:

1