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 in a grassy field with kites in the sky'. How many words end with the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'the group of people are getting their suitcases together'. How many words end with the letter 'f' in the sentence.
Example Output: 1

Example Input: Sentence: 'a woman hitting a tennis ball with her racket'. How many words end with the letter 's' in the sentence.
Example Output:
1