  For our purposes, however, what is most interesting about this type of relational situation has to do with complication it presents for reductivists and non-reductivists alike. In paradigmatic relational situations, there is always a distinct property or accident corresponding to each member of the relevant pair of converse relational concepts. Thus, when Simmias is taller than Socrates, there is one accident corresponding to the concept ‘taller than’ (namely, an accident of Simmias) and another accident corresponding to the concept ‘shorter than’ (namely, an accident of Socrates).  But now consider a situation such as Simmias’s thinking about Socrates (or God’s being related to a creature)—that is, a situation where two substances are related by a property or accident inhering in only one of the relata. What is to be said about the relationship between the relevant properties and concepts in situations of this sort?