There’s no way to use “rules and facts” to express concepts like “chair” or “grass”, or “face” or “justice” or really anything. Any project trying to use deterministic symbolic logic to represent the world fundamentally misunderstands cognition.
Sure there is: a chair is anything upon which I can comfortably sit without breaking it.
Similarly, I've sat in some very uncomfortable chairs. In fact, I'd say the average chair is not a particularly comfortable one.
Do you really have a personal ontology that requires you to ask the tense and person acting on a thing to know what that thing is? I suspect you don't; most people don't, because it would imply that the chair wouldn't be a chair if nobody sat on it.