    # KEHOME/kb/tabrasa.html
    # Apr/11/2003

    #===================#
    # tabula rasa       #
    # minimum hierarchy #
    #===================#

    begin hierarchy tabhi;
    existent;
    /    entity;
    //      ANIMAL;
    ///         person;
    //      PLANT;
    //      OBJECT;
    /    characteristic;
    //      part;
    //      attribute;
    ///         purpose;
    ///         format;
    ///         meaning;
    ///         fact;	# text of input line
    ///         space;	# context space
    ///         time;	# context time
    ///         view;	# context view
    ///         product;	# sentence output
    ///         subject;	# sentence subject
    ///         predicate;	# sentence predicate
    ///         object;	# sentence object
    //      relation;
    //      action;
    ///         sense;
    ///         perceive;
    ///         classify;
    ///         measure;
    ///         identify;
    //      interaction;
    /    proposition;
    //      context;
    //      sentence;
    //      newproposition;
    /    unknown;

    OBJECT;
    /    group;  # abstract
    //	enumeration;
    //	list;
    //	mcf;
    //	multiset;
    //	ntriple;
    //	Set;
    //	sequence;
    //      concept;
    ///         number;
    ///         individual concept;  # exgroup, singular
    ///         collective concept;  # ingroup, plural
    //      LATTICE;
    ///         lattice;
    ///         hierarchy;
    ///         unithierarchy;
    /    symbol;  # concrete
    //      separator;
    //      word;

    sentence;
    /    statement;
    //      definition;
    /    question;
    /    command;
    /    assignment;
    end hierarchy tabhi;

    begin unithierarchy tabprim;
    OBJECT;
    /    ke;
    space;
    /    here
    /    there;
    /    everywhere;
    time;
    /    now;
    /    past;
    /    present;
    /    future;
    end unithierarchy tabprim;