<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] Perhaps a door which has been repurposed. For instance, an old door which has been made into a table. The tricky thing here is that there are two definitions in play, one for a large piece of wood or metal which can serve as a door, and one meaning anything that serves as a barrier between two spaces.</s>