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 white and gray cat is in a bathroom sink'. How many words end with the letter 'm' in the sentence.
Example Output: 1

Example Input: Sentence: 'a man riding a wave on a white surfboard'. How many words end with the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'a woman holding a tennis ball on top of a tennis court'. How many words end with the letter 'a' in the sentence.
Example Output:
3