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

Ex Input:
Sentence: 'there is a plate if food with broccoli fish and a baked potato'. How many words contain the letter 'k' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'the black bears are together on the rocks eating outside'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man eats a pizza in a small restaurant chain'. How many words contain the letter 'j' in the sentence.

Ex Output:

0