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

Ex Input:
Sentence: 'a sandwich shop with cars parked in front of it'. How many words contain the letter 'u' in the sentence.

Ex Output:
0


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 photo of a yellow and green fire hydrant'. How many words contain the letter 'w' in the sentence.

Ex Output:

1