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 Input:
Question: I am referring to someone who makes people 'buy' what he says and gets things done by them through nothing but clever speech something one can describe as crafty or beguiling, but not fraudulent. I pondered over con man and con artist for a while but those terms seem to hold a hint of crime, so those terms won't fit in. I am wondering if there is a more suitable phrase or word.
Answer: Not quite a single word, but silver tongued probably fits.

Ex Output:
yes

Ex Input:
Question: There is a particular taste that I could never quite translate in English. It is not bitter, although it sometimes occurs with it. The best example is eating a raw quince fruit. The mouth and tongue get a sort of dry feeling. Similar taste can be experienced with some persimmon fruit, and unripe plums. I know the word in French (apre) and Bulgarian (). Google translates these as rough, but that somehow seems unlikely. Any ideas?
Answer: I think you may be describing the sense one also often gets from grape juice, which is a dry sensation throughout the mouth, even though it's full of liquid. That flavor and taste is called "sec." Sec is another way to say medium dry, un-sweet and is borrowed into gastronomy from wine world.

Ex Output:
no

Ex Input:
Question: is it 'a usual' or 'an usual'? 'A usual' sounds more correct in my head ('Today was a usual day.') than 'an usual', but u is a vowel. Which one is correct and why?
Answer: Usual (pronounced /ju.u.l/ as in you) begins with a consonant sound and, as such, it should be preceded by a not an. As an aside, I cannot help but point out that the sentence Today was a usual day is not usually heard in regular conversation. Today was an unusual day is what one might hear, instead! Indeed, I rarely hear the construction a usual. The definite article is more commonly used, in my experience: That's the usual thing. In place of a usual, one would also be more likely to hear not an unusual: Today was a usual day / Today was not an unusual day This is a usual occurrence / This is not an unusal occurrence or This usually happens You are right in saying that a usual sounds weird. As speakers, we tend to avoid constructions which, though correct, do not flow easily from the mouth. In sum, the following are valid and commonly used alternatives: not [an] unusual the usual usually.

Ex Output:
yes