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 man is eating a number of sandwiches next to a bottle of water'. How many words end with the letter 'a' in the sentence.
Example Output: 3

Example Input: Sentence: 'a man and his dog are walking away from the ocean with a surfboard'. How many words end with the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'this is a living room with a couch a coffee table and a floor fan'. How many words end with the letter 'e' in the sentence.
Example Output:
2