Are they conscious or not?
In any case, I recently stumbled upon Joshua Knobes' blog entry over at Experimental Philosophy summarizing Felipe De Brigard's fascinating paper forthcoming in the Journal of Consciousness Studies. De Brigard found that simply framing a question in a certain way can determine whether a person is perceived to be conscious or not. The link can be found here.
Aaah...the power of questions...back to the dungeon I go.