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

Ex Input:
Sentence: 'a woman is smiling next to a dog'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'dental personnel in dentist office standing in front of a computer screen'. How many words contain the letter 'w' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'several stuffed animals with long hair are lined up'. How many words contain the letter 'u' in the sentence.

Ex Output:

2