the county highway has which roads in their highway system?
Entity Entity Entity
m.02x00dx m.02pv3qh m.04smgj
County Road 122 County Road 81 County Road 12
class entity
transportation.road m.05mwlr
transportation.road transportation.highway_system
Road county highway
none none
transportation.road.highway_system
Highway system
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 :transportation.road . 
VALUES ?x1 { :m.05mwlr } 
?x0 :transportation.road.highway_system ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND transportation.road (JOIN transportation.road.highway_system m.05mwlr))