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 bird hunts for bugs in the tall grass'. How many words end with the letter 's' in the sentence.
Example Output: 3

Example Input: Sentence: 'an airport with a few airplanes scattered here and there'. How many words end with the letter 'n' in the sentence.
Example Output: 1

Example Input: Sentence: 'a group of brown teddy bears sitting along side of a sidewalk'. How many words end with the letter 'n' in the sentence.
Example Output:
1