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 buttering toast in his kitchen on the counter'. How many words contain the letter 'c' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bear with white and dark fury lying on rocks next to some water'. How many words contain the letter 'e' in the sentence.

Ex Output:

5