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 small shelf in front of a mirror with an apple and cosmetics on it'. How many words end with the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'a portion of carrot cake is sitting on a plate'. How many words end with the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'a couple of elephants walking down a river filled with water'. How many words end with the letter 's' in the sentence.
Example Output:
1