In this task, you need to count the number of words in a sentence that end with the given letter. Answer with numbers and not words.

Ex Input:
Sentence: 'a young man swings his tennis racket on the court'. How many words end with the letter 's' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a snowboarder buried up to his waste in snow'. How many words end with the letter 'o' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a skier is in military attire with his backpack and coming down a slope'. How many words end with the letter 's' in the sentence.

Ex Output:

2