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

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


Ex Input:
Sentence: 'a zebra standing still in the grass near a tree'. How many words contain the letter 'w' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a cat sitting on top of a computer keyboard'. How many words contain the letter 'g' in the sentence.

Ex Output:

1