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

Ex Input:
Sentence: 'a cat in a tie sits on the couch'. How many words contain the letter 't' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a sleek and pointy fighter jet flying in the sky'. How many words contain the letter 'f' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a gray and black spotted and striped cat wearing a vest and climbing in a vehicle'. How many words contain the letter 't' in the sentence.

Ex Output:

4