| ++PhiloSURFical : Problem of the kind 'Does X exist?' |
| •owl:Thing |
| •PHILOSURFICAL-ENTITY |
| •CRM-ENTITY |
| •PERSISTENT-ITEM |
| •THING |
| •MAN-MADE-THING |
| •CONCEPTUAL-OBJECT |
| •PROPOSITIONAL-CONTENT |
| •PRODUCT-PROPOSITION |
| •PHILOSOPHICAL-IDEA |
| •PROBLEM |
| •EXISTENCE-PROBLEM |
Class(EXISTENCE-PROBLEM partial PROBLEM
restriction(CONTAINS-CONCEPT allValuesFrom(CONCEPT)))