instruction:
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.
question:
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: The technical definitions are: open vowel sounds or closed vowel sounds. All open vowel sounds such as, orange, envelope and image require the article "an" to bridge the two open sounds. Closed vowel sounds typically start with an unwritten "yu" consonant such as "a university" or "a united Europe, a Europe which is united" and therefore use the more common "a" article.
answer:
no


question:
Question: I'm trying to find different ways of saying that "You don't have to be a rocket scientist", but I can't seem to get any good ideas. I got a variation, "You don't have to be a brain surgeon...," but are there any others ways. It doesn't have to follow the routine of "You don't have to...". 
Answer: It's not like you're inventing the weel.
answer:
no


question:
Question: There was the following passage in New York Times' (October 6) article commenting on GOP Presidential candidate, Carly Fiorina under the headline, 'If she's a feminist, then I'm a T. Rex': "Her record at Hewlett-Packard firing skilled Americans by the thousands and outsourcing their jobs to China and India, while almost running her company into the ground with an ill-advised merger is hardly a sterling record for any sort of candidate, assuming we actually want a president of all the people rather than a modern Ebenezer Scrooge, - - This is a woman who would deny other women control over their own bodies, as well. "If she's a feminist then I'm a T. rex." According to Jurassic wiki, Tyrannosaurus rex, the most famous of all dinosaurs species and commonly known as T. rex, was the largest of the Tyrannosaur family and by extension one of the largest theropods, reaching 12 to 13 meters in length. But what does 'If she's a feminist, then I'm a T. Rex' mean? Does the writer sarcastically admit herself being anachronistic? Why should it be a T.Rex, not other monsterous or supernatural creatures, say, Moby-Dick and Godzilla? Is this a cute turn of phrase? Could you translate "I'm a T.rex" into plain English? 
Answer: All that that is saying is that she is no feminist whatsoever, being just as much of a feminist as the columnist is a giant extinct dinosaur. That is, not at all.
answer:

yes