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 black bear eating a carrot on top of rocks'. How many words end with the letter 'r' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a red stop sign sitting under a couple of green street signs'. How many words end with the letter 't' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'the man in the air doing a skateboard trick'. How many words end with the letter 'a' in the sentence.

Ex Output:

1