(subclass VolcanicEruption GeologicalProcess) | Geography.kif 2431-2431 | VolcanicEruption e' uma sub-classe de GeologicalProcess |
(subclass VolcanicGasRelease VolcanicEruption) | Geography.kif 6768-6768 | VolcanicGasRelease e' uma sub-classe de VolcanicEruption |