a irrigation canal is a subcategory of what geographical feature?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.066rl m.01yxd8 m.013qrm m.05c0mz9 m.02zjgc m.03q7p8 m.013s5w m.0b7724p m.09gbdhc m.03rvxq
Panama Canal Crinan Canal Forth and Clyde Canal Canal du Loing Andover Canal Canal Saint-Martin Gloucester and Sharpness Canal Vliet Christianshavns Kanal Bude Canal
class class entity
geography.geographical_feature geography.geographical_feature_category m.0cn9p0w
geography.geographical_feature geography.geographical_feature_category geography.geographical_feature_category
Geographical Feature Geographical feature category Irrigation canal
none none none
geography.geographical_feature.category geography.geographical_feature_category.subcategories
Category Subcategories
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :geography.geographical_feature . 
?x1 :type.object.type :geography.geographical_feature_category . 
VALUES ?x2 { :m.0cn9p0w } 
?x0 :geography.geographical_feature.category ?x1 . 
?x1 :geography.geographical_feature_category.subcategories ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND geography.geographical_feature (JOIN geography.geographical_feature.category (JOIN geography.geographical_feature_category.subcategories m.0cn9p0w)))