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: On a Physics specification, it says: 6.7 Know how to use two permanent magnets to produce a uniform magnetic field pattern. Isn't it "produce an uniform magnetic field", or is the existing "produce a uniform magnetic field pattern" correct? 
Answer: The rule of placing an before a vowel is actually to place an before a vowel sound. Therefore, because uniform is pronounced with a "y" sound (/junfm/), which is not a vowel sound, it takes an a before it.

Ex Output:
no


Ex Input:
Question: As a programmer I use the word Authentication and the word Authorisation in my code. I'd like to find nice abbreviations or alternative words for each of them that are not ambiguous and has reasonably large 'psychological distance' between. i.e. they don't look too similar i.e 'Auth' is not OK because it is ambiguous. At the moment I have just removed some letters Authtictn Authristn Any suggestions? 
Answer: I've worked with IETF people and developers who spend a lot of time on Apache, who tend to use: AuthN - Authentication AuthZ - Authorization You'll find these abbreviations in a lot of IETF technical documents. Yes, I know British spelling prefers s over z (authorisation).

Ex Output:
yes


Ex Input:
Question: When a user wants to delete something on a website, I would like to display a message for him/her to confirm. Which of the following is the grammatically correct way to say so? Are you sure to delete this item? or Are you sure you want to delete this item? 
Answer: Are you sure to delete this item? Sure means "certain, without doubt". Therefore this asks if they are definitely going to delete the item. This isn't something to ask the user; if anything it's something for the user to ask about the program; "will it definitely be gone". Are you sure you want to delete this item? This asks not about what will happen (which is a question about the program) but what is desired (which is a question for the user). This is the one to go for.

Ex Output:

yes