Definition: 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.
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: The Middle English verb undon was often applied to opening a book (and many other objects). c1300 SLeg.Fran.(1) (LdMisc 108)159 : He on-dude e bok and e furste at he cam to at was a godspel. (He undid the book and the first that he came to - that was a gospel.) a1325 SLeg.(Corp-C 145)354/166 : Hewende him sulf for is wei & e oer vndude e bok. (He walked himself forth his way and the other undid the book.) c1475 Mankind (Folg V.a.354)797 : All e bokys in e worlde, yf ei hade be wndon, Kowde not a cownselde ws bett. (All the books in the world, if they had been undone, could not have counseled us better.) This meaning has since disappeared along with the book clasps that would have once been common on books. (To see a few examples of bindings, see "Medieval bindings" on the British Library site.).

no