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.

[Q]: Question: Any situation, any time; this person has always something negative to say about it. It should be a noun or an adjective to describe a person who is a damp cloud walking over every sunshine situations at the cubicle, hoping to drench other people with his miserable comments. I considered "sourpuss" but would prefer something more important sounding, like "misogynist."
Answer: My favorite of all time comes from a Saturday Night Live character: Debbie Downer. Ever since, when someone's hellbent on constantly reporting about the sucky side of everything, you will often hear someone say to them, "Quit being such a Debbie Downer.".
[A]: no

[Q]: Question: Possible Duplicate: How do I say "Our meeting is preponed"? A friend of mine asked me this question, and it caught my curiosity. Is there an explicit opposite of the word postpone? As in, do something in advance? Clearly what I just said is functionally equivalent to the answer I am seeking, but I was wondering if there was a single word that is the antonym. More context: Bob was supposed to start work in July, but due to a work visa issue, he had to begin in advance.
Answer: The most business-speaky option is expedite. Other alternatives include accelerate, hasten, and advance. Technically prepone is in fact the precise antonym, but I honestly wouldn't be caught dead using it.
[A]: yes

[Q]: Question: What's the difference between these two phrases?
Answer: The difference is pretty subtle, but the "did you..." version implies more of an event, i.e. something that needs to be seen just once, perhaps because it's temporary. So, Have you seen [insert movie title]? but Did you see last night's [insert TV show name] episode? Edit: note that there's nothing wrong with "Have you seen last night's episode?", or with "Did you see the movie?", but there is a (slight) difference in meaning.
[A]:
no