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: 'an elephant by the side of the road'. How many words end with the letter 'f' in the sentence.
Example Output: 1

Example Input: Sentence: 'young man in catchers gear playing baseball on a sunny day'. How many words end with the letter 'y' in the sentence.
Example Output: 2

Example Input: Sentence: 'a group of giraffes in a closed in environment near a building'. How many words end with the letter 'a' in the sentence.
Example Output:
3