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: 'some people standing around one man is wearing a tie'. How many words end with the letter 'a' in the sentence.
Example Output: 1

Example Input: Sentence: 'an asian female holding four hello kitty pens in a retail store'. How many words end with the letter 'e' in the sentence.
Example Output:
2