| ++Philosurfical: |
| •owl:Thing |
| •PHILOSURFICAL-ENTITY |
| •CRM-ENTITY |
| •PERSISTENT-ITEM |
| •THING |
| •MAN-MADE-THING |
| •CONCEPTUAL-OBJECT |
| •REPRESENTATIONAL-FORM |
| •SYMBOLIC-FORM |
| •ARTIFICIAL-LANGUAGE |
| •PROGRAMMING-LANGUAGE |
Class(PROGRAMMING-LANGUAGE partial ARTIFICIAL-LANGUAGE)