For the first one: Roy and Durkon asked where Xykon was. The Oracle told them "In his throne room". Roy and Durkon tried to ask another question. They Oracle told them to bugger off. Roy dangled the bloody puke out a window. They got another question. They asked for the location of Xykon in a much more specific sense. The Oracle told them. They left.
But they asked three questions. Question 1's answer was "in his throne room". Question 3's answer was "Dungeon of Dorukan in the Redmountain Hills" Both were asked by Roy. What happened to Durkon's question: Question 2?
We're all in the Monster Manual somewhere. My entry is between Howler and Hydra.