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 are standing outside while one holds an open umbrella'. How many words end with the letter 'n' in the sentence.
Example Output: 2

Example Input: Sentence: 'a brown bear swimming in water next to tree trunk'. How many words end with the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'two bears are standing side by side on some rocks'. How many words end with the letter 'e' in the sentence.
Example Output:
4