"What are we talking about?"

Translation: Pri kio ni parolas?

[ConorFingleton]

Could this be phrased with a different word order?

As in could you say "Ni parolas pri kio?" and still have it mean the same thing?

[Raztastic]

It seems that questions in Esperanto start with the question correlative. "We are talking about what?" is a little odd in English, and this seems to also be the case in Esperanto. Perhaps Yoda phrases his questions like that, but I am uncertain.

[Robbadob]

What about "Kio ni parolas pri"?

[salivanto]

No, that's not correct. It has to be pri kio as in the example provided by Duolingo.

[azzipog]

why isnt "kio" in the accusative case here?

[Luis_Domingos]

Because of the preposition - the answer also won't have an accusative marker because it will be followed by pri - Ni parolas pri la vetero. We are talking about the weather.

[AnalystBiomecha]

Shouldn't "diras" be more accurate?

[Pudingego]

According to tujavortaro.net, diras is like "telling" or "stating" and parolas is like actual verbal speech.