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

Ex Input:
Sentence: 'a man that is sitting at a table with a bowl'. How many words contain the letter 'k' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a group of people on a beach beneath a cloudy sky'. How many words contain the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a little kids standing all alone in a big field flying a kite'. How many words contain the letter 'c' in the sentence.

Ex Output:

0