| LowlandArea(lowland area) | | abysm, abyss, lowland, polder, swale, tidewater |
| appearance as argument number 1 |
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| (documentation LowlandArea EnglishLanguage "A LowlandArea is a land area lower than the surrounding region, and usually level land.") | Geography.kif 4055-4056 | |
| (subclass LowlandArea LandForm) | Geography.kif 4054-4054 | Lowland area is a subclass of land form |
| appearance as argument number 2 |
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| (subclass Plain LowlandArea) | Geography.kif 4288-4288 | Plain is a subclass of lowland area |
| (subclass Valley LowlandArea) | Geography.kif 4297-4297 | Valley is a subclass of lowland area |
| (termFormat ChineseLanguage LowlandArea "低地地区") | domainEnglishFormat.kif 35211-35211 | Valley is a subclass of lowland area |
| (termFormat ChineseTraditionalLanguage LowlandArea "低地地區") | domainEnglishFormat.kif 35210-35210 | Valley is a subclass of lowland area |
| (termFormat EnglishLanguage LowlandArea "lowland area") | domainEnglishFormat.kif 35209-35209 | Valley is a subclass of lowland area |
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