The entire ontology is built of only two different subgraph patterns. These two patterns correspond to a slot that is a Relation and a slot that is an Attribute. In this analysis, we ignore certain special slots. Some of them like Definition and Time-Stamp are like Attributes but have fillers that are not in the set of literals. Others are like Relations but are not defined as Relations. Examples are the subsumption links of Is-A and Subclasses and the instance links Instances and Instance-Of. There are also two complexities associated with the relation pattern that we illustrate briefly.