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 cat standing in front of a small potted plant'. How many words end with the letter 'f' in the sentence.
Example Output: 1

Example Input: Sentence: 'the elderly person wearing a cap is smiling'. How many words end with the letter 's' in the sentence.
Example Output: 1

Example Input: Sentence: 'a pair of hands using a sharp knife to cut small carrots into small pieces'. How many words end with the letter 's' in the sentence.
Example Output:
3