| (subclass HoleRegion Region) | Merge.kif 9851-9851 | Hole is a subclass of region |
| (subclass GolfHole HoleRegion) | Sports.kif 959-959 | Golf hole is a subclass of hole |
| (subclass Glottis HoleRegion) | Mid-level-ontology.kif 6142-6142 | Glottis is a subclass of hole |
| (subclass BodyOrifice HoleRegion) | Mid-level-ontology.kif 12047-12047 | Body orifice is a subclass of hole |
| (subclass Pupil HoleRegion) | Mid-level-ontology.kif 12121-12121 | Pupil is a subclass of hole |
| (subclass Cave HoleRegion) | Geography.kif 6012-6012 | Cave is a subclass of hole |
| (subclass Burrow HoleRegion) | Geography.kif 6027-6027 | Burrow is a subclass of hole |
| (subclass ATMSlot HoleRegion) | FinancialOntology.kif 3659-3659 | ATM slot is a subclass of hole |
| (subclass InternalCombustionChamber HoleRegion) | Cars.kif 311-311 | Internal combustion chamber is a subclass of hole |
| (subclass Crankcase HoleRegion) | Cars.kif 324-324 | Crankcase is a subclass of hole |
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