c and the ontology relate to the real world and/or
&gt; any possible world, situation, state of affairs, etc.  And
&gt; the next thing is how can you reason about them with the
&gt; logic and talk about them with language(s) you want to use.

MW: Yes.
&gt; 
&gt; We all know that the knowledge representation must accommodate
&gt; individuals, states, events, space, time, space-time, process,
&gt; activity, agents, etc.  But you cannot start to put these things
&gt; into a hierarchy until you have a very clea