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 picture of a old orange and blue tugboat in the ocean'. How many words end with the letter 'n' in the sentence.
Example Output: 2

Example Input: Sentence: 'a very tall tower with a clock on each of its sides'. How many words end with the letter 'f' in the sentence.
Example Output: 1

Example Input: Sentence: 'this is an image of some food at least a banana and a lemon'. How many words end with the letter 'a' in the sentence.
Example Output:
3