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 little kid that is in a bath tub'. How many words end with the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'a snowboarder on the ground after a fall'. How many words end with the letter 'r' in the sentence.
Example Output: 2

Example Input: Sentence: 'a field filled with people flying colorful kites in a blue sky'. How many words end with the letter 'a' in the sentence.
Example Output:
2