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: Do the English have an ancient (obsolete) verb for the action of the book opening? For example, in Russian we say otkrit' (open the book), but in the Old slavonic the verb razognuti (to unbend the book) was used. 
Answer: This is a very interesting question. There may not be an old word in English that does what you describe, but it is important to note that the English word "open" relative to a book meant something different in earlier times. To open a book now usually means to part or spread the cover and the pages into a position so you can read the pages contained in the book. However, books used to be made by folding sheets of paper larger than the page size and they would be sold without trimming the edges, so when you got your new book, it would be "unopened" meaning that you couldn't turn the pages. You had to "open" the book with a dull knife (like a letter opener) by ripping along the folds. (This is why some books have ragged edges of the text block, to evoke the memory of those ripped page edges.) The OED has e. transitive. To cut open the leaves of (a book) when they have been left joined along an edge during the making; to cut open (the leaves) of such a book. You will find old books described (by knowledgable book dealers) as "unopened". This correctly means that the folded sheets are un-ripped; it doesn't mean that no-one has ever spread the covers and looked inside.

Ex Output:
yes


Ex Input:
Question: What goes in the blank? Commerce Commercial Finance Financial Trade __________ 
Answer: One word is mercantile: Related to trade [ODO].

Ex Output:
yes


Ex Input:
Question: Is there a word to describe an object that excels in form and function? I am trying to avoid very general words like great, superb or excellent. 
Answer: Exquisite, polished or "exquisitely polished".

Ex Output:

no