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

Ex Input:
Sentence: 'a cat sitting on a wooden chair look at the camera'. How many words contain the letter 'd' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man in a blue shirt and ear piece holds a clip board'. How many words contain the letter 'u' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a person with skis sitting in the snow'. How many words contain the letter 'q' in the sentence.

Ex Output:

0