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 messy bed sitting under a lit up ceiling fan'. How many words end with the letter 'n' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a group of people are standing outside while one holds an open umbrella'. How many words end with the letter 'n' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man riding on the back of a motorcycle down a street'. How many words end with the letter 'n' in the sentence.
[EX A]:
3