ependent Relative)
&gt; &gt;
&gt; &gt; ;;;;;;;;;;;;;;;;;;;;;;; SUPPLEMENTARY ONTOLOGY ;;;;;;;;;;;;;;;;;;;;;;;;
&gt; &gt;
&gt; &gt; ;; A minimal ontology of timepoints is included below
&gt; &gt; ;; (from the NIST Process Specfication Language (PSL) project:
&gt; &gt; ;; <A  HREF="http://www.nist.gov/psl">http://www.nist.gov/psl</A>).  An analogous ontology for spatial
&gt; &gt; ;; locations is needed as well.  Sowa has expressed (controversial)
&gt; &gt; ;; reservations about the assumption that the before 