 So, one important question to ask of the category object is which things are in its extension. This question will admit a variety of answers. And depending on whether there is a contrast class, it will have a variety of interpretations. If object has no contrast class and every thing is in its extension—if both the metaphysical and semantic theses of the Umbrella View are correct—then the question of the extension of object is equivalent to the ontological question (see below). If object has a contrast class—if at least one of the metaphysical and semantic theses of the Umbrella View is false—then the question of the extension of object is not equivalent to the ontological question. Instead, it asks, “Of all the things there are, which ones are the objects?” If the contrast class of object is property, then the Extension Question is, “What things are there that aren’t properties?” If the contrast class is universal, the question is, “What things are there that aren’t universals?” If the contrast class hasn’t been specified, and one is starting from what ordinary people accept, then the Extension Question is, “What ordinary objects are there?”