(subclass Mountain LandForm) | Geography.kif 4026-4026 | Mountain est une sous-classe de LandForm |
(subclass Mountain UplandArea) | Geography.kif 4027-4027 | Mountain est une sous-classe de UplandArea |
(subclass VolcanicMountain Mountain) | Geography.kif 4078-4078 | VolcanicMountain est une sous-classe de Mountain |