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Situations / ontology / Armstrong: states provide a "super category" in the sense that situations include features, and features include properties and relations - Place per - but particulars do not include exactly the properties, which they "carry" - also properties do not include situations which consist in the fact that something has these properties - one should not distinguish between simple and compound situations: e.g. cat on the mat + eats - but "on the mat or in bed": ismade true by the one or the other situation.
AR II = Disp
D. M. Armstrong
Dispositions, Tim Crane, London New York 1996
What is a Law of Nature? Cambridge 1983