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

Ex Input:
Sentence: 'a bearded man sits on a couch with an electronic device in his hand'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a team of junior baseball players carrying a trophy'. How many words contain the letter 'w' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a young girl is skiing as others are far down the slope'. How many words contain the letter 's' in the sentence.

Ex Output:

5