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 person that is riding on a horse in a grass field'. How many words end with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man in a snow suit skiing down a powdery mountain'. How many words end with the letter 'n' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'motorcycle cops parked next to some people holding signs are marching down the road'. How many words end with the letter 'o' in the sentence.
[EX A]:
1