| (subclass WeatherFront WeatherProcess) | Weather.kif 812-812 | 天气前线 是 天气过程 的 subclass |
| (subclass WarmFront WeatherFront) | Weather.kif 818-818 | 温暖的前线 是 天气前线 的 subclass |
| (subclass ColdFront WeatherFront) | Weather.kif 824-824 | 冷锋 是 天气前线 的 subclass |
| (subclass OccludedFront WeatherFront) | Weather.kif 830-830 | 封闭的前方 是 天气前线 的 subclass |
| (subclass StationaryFront WeatherFront) | Weather.kif 836-836 | 固定的前方 是 天气前线 的 subclass |
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