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

Ex Input:
Sentence: 'two elephants in the water in front of a waterfall'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a microwaved broccoli and cheese dish and a spoon'. How many words contain the letter 'n' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'the view of a pier throw rain covered window'. How many words contain the letter 'p' in the sentence.

Ex Output:

1