For the NLP crowd.   
How do you represent IS ? Do you differentiate IS from TYPE-OF (i.e., IS-A), or 
INSTANCE-OF ?
Take for example, 
IS(apple, fruit)  - TYPE-OFIS(John_Smith, Politician) - INSTANCE-OFIS(my_coat, 
green) -  ???

Cyc uses individuals and collection and treats generalization as set membership 
between the instance and the collection.  They use Genls  (generalizes) rather 
than IS-A.  But I don't recall how they representIS. 
How do you represent these distinctions? 
~PM

                                          


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