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 bearded man showing a horse to women in a horse stall'. How many words end with the letter 'a' in the sentence.
Example Output: 3

Example Input: Sentence: 'the side of a chartered bus painted with a red horse'. How many words end with the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'a young skateboarder performs a trick in the parking lot'. How many words end with the letter 'r' in the sentence.
Example Output:
1