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: 'the man is swinging the tennis racket at the ball'. How many words end with the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a dog running behind three sheep in an open field'. How many words end with the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'an ancient looking urn painted with a man caring for his horse'. How many words end with the letter 'n' in the sentence.
Example Output:
3