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 in snow gear and skis on a slope'. How many words end with the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'a young man is performing a skateboard trick above a roadway guardrail'. How many words end with the letter 's' in the sentence.
Example Output: 1

Example Input: Sentence: 'a teddy bear riding a toy horse by a tree'. How many words end with the letter 'y' in the sentence.
Example Output:
3