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.

[EX Q]: Sentence: 'a city street clock standing in front of a white building'. How many words end with the letter 'f' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a person is windsurfing on the water near houses'. How many words end with the letter 'n' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a herd of zebra standing next to each other in a lush green field'. How many words end with the letter 'r' in the sentence.
[EX A]:
1