| 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 3985-3986 | |
| (subclass LowlandArea LandForm) | Geography.kif 3984-3984 | Lowland area is a subclass of land form |
| appearance as argument number 2 |
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| (subclass Plain LowlandArea) | Geography.kif 4218-4218 | Plain is a subclass of lowland area |
| (subclass Valley LowlandArea) | Geography.kif 4227-4227 | Valley is a subclass of lowland area |
| (termFormat ChineseLanguage LowlandArea "低地地区") | domainEnglishFormat.kif 35217-35217 | Valley is a subclass of lowland area |
| (termFormat ChineseTraditionalLanguage LowlandArea "低地地區") | domainEnglishFormat.kif 35216-35216 | Valley is a subclass of lowland area |
| (termFormat EnglishLanguage LowlandArea "lowland area") | domainEnglishFormat.kif 35215-35215 | Valley is a subclass of lowland area |
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