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: 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.".
no

Question: What is the difference between "Did you find?" and "Have you found?" When should I use the first sentence, and when the second one? 
Answer: Did you find is the simple past and indicates that you are no longer looking for it. Have you found is the present perfect and indicates a link with the present, specifically, that you could still be looking for it.
yes

Question: Opening doors, offering to pay the tab, helping with a coat or a light of the smoke: we may describe these acts of a man to be gentlemanly. In a word, how may we describe these acts of any person? 
Answer: It's generally considered informal (and possibly low-register) but classy is a non-gendered term that can convey a similar constellation of style, manners and sophistication to the word gentlemanly.

no