(subclass VolcanicEruption GeologicalProcess) | Geography.kif 2431-2431 | VolcanicEruption は GeologicalProcess の subclass では %n |
(subclass VolcanicGasRelease VolcanicEruption) | Geography.kif 6768-6768 | VolcanicGasRelease は VolcanicEruption の subclass では %n |