e give rise to the 4D label.

It follows that some important ways in which things stand to one another are
set membership and whole part.

A key thing to note is that this extensional approach automatically takes
care of change over time, using states as the backbone of how this is
managed. Competent and comprehensive accounting for change is a critical
component of any ontology that is going to cope with a changing world.

POSSIBLE WORLDS

One of the key challenges for any viewpoint is how to model what co