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.

Example Input: Sentence: 'a group of people riding skis up to a cabin'. How many words end with the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'a bike stands on his dirtbike in a circus'. How many words end with the letter 'n' in the sentence.
Example Output: 2

Example Input: Sentence: 'a crosscountry skier makes his way across a snowy landscape'. How many words end with the letter 'y' in the sentence.
Example Output:
3