SHyGUyX57..hmm...OH!, an old member in the forums is back!
The thing is that Chiaki doesn't post the questions here since she noticed that people are going to the forums than the main page for the trivia which she addressed back in some previous episodes. In short, she doesn't post the questions here.
And now on-topic for the trivia question: I am having problems with this question and I know what they are: I haven't been watching 1000+ anime and not knowing the companies that produce them. All I know is Studio 4C, Gainax, Studio Bones, MADhouse, Sunrise off the top of my head. Might as well guess on this one.