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 stop light that is out on a pole'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'many canadian geese stand in a field of grass'. How many words contain the letter 'y' in the sentence.

Ex Output:

1