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 dog running behind three sheep in an open field'. How many words end with the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'a batter is taking a swing at the ball'. How many words end with the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'a kitchen with wood cabinets stainless steel oven stainless steel microwave and a refrigerator and a hole where the cooktop goes'. How many words end with the letter 'n' in the sentence.
Example Output:
2