TASK 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.
PROBLEM: 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.).

SOLUTION: no

PROBLEM: Question: Possible Duplicate: When is "L" doubled? I'm confused about the two spellings. In which contexts do I have to use canceling or cancelling? Google returns 15.6 million results with canceling and 18 million with cancelling, so I don't know what is the good spelling. Why are both possible, and are there other such pairs?
Answer: There are many words that have different accepted spellings between British and American English. The wiktionary.org entry for "cancelling" says: Alternative forms canceling (US English) This implies that a single "l" is preferred in American English and a double "l" in British English.

SOLUTION: yes

PROBLEM: Question: I am developing some software where users are assigned tasks. They will see a date and time for when they were assigned to the task, but if they were later removed from the task, there will be a date and time for that also. 01/02/14 - Assigned 03/02/14 - Unassigned I'm pretty sure unassigned isn't correct. I suppose the task itself could be in a state of being unassigned, but the user wasn't "unassigned" from it. Notes: I don't want to use the word "removed", as I don't think it conveys the correct meaning and also sounds too harsh. I would like to avoid using a word your average person would never have heard of, as this isn't very user-friendly from a software point of view.
Answer: "revoked", "withdrawn", "retracted", or simply "reassigned".

SOLUTION:
yes