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 motorcycle parked up against a building with graffiti on it'. How many words end with the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'an elephant crosses a dirt road in front of a white truck'. How many words end with the letter 's' in the sentence.
Example Output: 1

Example Input: Sentence: 'a man and a surfboard in the ocean at a beach'. How many words end with the letter 'a' in the sentence.
Example Output:
3