Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

[EX Q]: Question: There is the verb quicken to make something quick or faster, but Merriam-Webster doesn't list slowen. What is the verb to make something slow (as in 'reduce in speed', not 'something that is slow')? 
Answer: There is also decelerate, which is the opposite of accelerate. From M-W verb to move slower : to lose speed.
[EX A]: no

[EX Q]: Question: When should whilst be used instead of while? For example, should I use the first or the second sentence? They don't do this whilst they do that. They don't do this while they do that. Which would be correct? 
Answer: I believe while and whilst are interchangeable, but whilst is more archaic and adds a nice flavoring to the sentence. That being said, "whilst" doesn't seem to come up so often in the middle of a sentence as you had it there, so I would use "while" in that case, even though both are grammatically correct. Whilst seems more apt to be put at the beginnings of sentences, e.g. Whilst going about my merry way I chanced upon a vagabond. Taking this serendipitous opportunity to satiate my bloodlust I decapitated him with a fork.
[EX A]: yes

[EX Q]: Question: "Jealousy" contains most of the vowels but lacks 'i'. Is there a word in the English language that contains every vowel (and preferably 'y')? 
Answer: I totally rule at Clockwords by using sequoia and facetiously. Wikipedia used to have a list of words containing all the vowels, but the article has since been deleted. Some of the fun facts it mentioned included: The word Iouea, a genus of sea sponges, contains all five regular vowels and no other letters. [...] There are many words that feature all five regular vowels occurring only once in alphabetical order, the most common being abstemious and facetious. [...] Considering y as a vowel, the suffix -ly can be added to a number of these words; thus the shortest word containing six unique vowels in alphabetical order is aeriously, with nine letters (OED)[.].
[EX A]:
yes