ided
&gt;from
&gt; &gt; below rather than above in our ontological engineering, I've stripped down
&gt; &gt; the top level once again.  I've tried to eliminate all concepts that are
&gt;not
&gt; &gt; necessary to support any of the content of the middle-level ontologies
&gt;that
&gt; &gt; have been incorporated thus far.  The resulting high-level structure can
&gt;be
&gt; &gt; summarized as follows (where the indentations indicate subclass-of
&gt; &gt; relations).
&gt; &gt;
&gt; &gt; Entity
&gt; &gt; Physic