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 group of people waiting for the bus at a bus stop while others pass by'. How many words end with the letter 's' in the sentence.
Example Output: 4

Example Input: Sentence: 'a bathroom with a mirror sink towel and shower curtain'. How many words end with the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'a clean young man in a red tie'. How many words end with the letter 'e' in the sentence.
Example Output:
1