I am looking for a schema in microdata/open graph protocol with which I can markup content generated in Q&A platforms. Q&A platforms are user generated Q&A system like popular stackoverflow, quora, answers.yahoo.com, answers.com etc. Typically, they have attributes like question, best answer, votes, number of answers, category, author who gave the best answer.
There's nothing specific, but a combination of schemas could offer similar semantics: