| 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 4225-4226 | |
| (subclass LowlandArea LandForm) | Geography.kif 4224-4224 | Lowland area is a subclass of land form |
| appearance as argument number 2 |
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| (subclass Plain LowlandArea) | Geography.kif 4458-4458 | Plain is a subclass of lowland area |
| (subclass Valley LowlandArea) | Geography.kif 4467-4467 | Valley is a subclass of lowland area |
| (termFormat ChineseLanguage LowlandArea "低地地区") | domainEnglishFormat.kif 35194-35194 | Valley is a subclass of lowland area |
| (termFormat ChineseTraditionalLanguage LowlandArea "低地地區") | domainEnglishFormat.kif 35193-35193 | Valley is a subclass of lowland area |
| (termFormat EnglishLanguage LowlandArea "lowland area") | domainEnglishFormat.kif 35192-35192 | Valley is a subclass of lowland area |
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