<s>[INST] When is a door not a door? [/INST] When it's a window.</s>\ <s>[INST] What properties can door have that make a door not a door? [/INST] A door cannot have properties that make a door not a door because a door is a door.
If it is, in fact, a window the prime property would be whether it was intended for people to pass through as its primary purpose.</s>