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

Ex Input:
Sentence: 'a man paddle boarding in the middle of the ocean'. How many words contain the letter 'i' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'some people are sitting around a black table'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'it is night time and the town is quiet'. How many words contain the letter 'b' in the sentence.

Ex Output:

0