I neglected to make a very important point.
begin hierarchy tabula rasa;
existent;
/ entity; # physical
Entity
/ group; # abstract
Entity
/ characteristic; #
property
//
attribute;
//
part;
///
context;
///
sentence;
//
relation;
//
action;
//
interaction;
/ proposition;
sentence;
/ statement;
/
question;
/ command;
/ assignment;
/
production;
/ conditional;
/ iteration;
/ quantification;
end hierarchy tabula rasa;
is my preferred hierarchy.
But the mKR/mKE system can dynamically
transform tabula rasa into another hierarchy
by concept integration and differentiation,
or it can use your favorite hierarchy instead.