 a sequence could be represented by
&gt; &gt;     a network of frames, a list of lists, a graph of graphs, or
&gt; &gt;     structures of objects in an object-oriented language.
&gt; &gt;
&gt; &gt; Each of these categories is further divided and subdivided by various
&gt; &gt; distinctions, some dyadic and some triadic.  Element is classified as
&gt; &gt; participant, circumstance, or process.  Figure is classified by another
&gt; &gt; triad of relational (being or having), material (doing or happening),
&g