| appearance as argument number 1 |
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| (documentation UrbanArea EnglishLanguage "An urban area, built-up area or urban agglomeration is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000.[from Wikipedia]") | Mid-level-ontology.kif 26603-26607 | |
| (instance UrbanArea RelationalAttribute) | Mid-level-ontology.kif 26602-26602 | UrbanArea 是 关联属性 的 instance |
| appearance as argument number 2 |
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| (termFormat EnglishLanguage UrbanArea "urban") | Mid-level-ontology.kif 26608-26608 |
| antecedent |
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| (=> (attribute ?A UrbanArea) (exists (?N) (and (equal ?N (PopulationFn ?A)) (greaterThan ?N 50000)))) |
Mid-level-ontology.kif 26614-26620 |
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| (=> (attribute ?A UrbanArea) (instance ?A GeographicArea)) |
Mid-level-ontology.kif 26610-26612 |
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Sigma version 3.0 is open source software produced by Articulate Software and its partners