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 bunch of birds that are sitting on steps'. How many words end with the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'a street pole with signs pointing in different directions'. How many words end with the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'a person on a surf board the water is wavy'. How many words end with the letter 'y' in the sentence.
Example Output:
1