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 brown bear swimming in water next to tree trunk'. How many words end with the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'group of skiers posing for a picture with snow mountains behind them'. How many words end with the letter 'w' in the sentence.
Example Output: 1

Example Input: Sentence: 'a large red and yellow double decker bus driving down a street'. How many words end with the letter 's' in the sentence.
Example Output:
1