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 close up of a cow behind a fence'. How many words end with the letter 'a' in the sentence.
Example Output: 3

Example Input: Sentence: 'a shower over a bath tub and a toilet'. How many words end with the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'the batter having a conversation with the catcher'. How many words end with the letter 'r' in the sentence.
Example Output:
2