which bridges are classificed as a retractable bridge?
Entity Entity
m.03mfh6 m.012m2r6r
Hood Canal Bridge Telescopic Bridge, Bridgwater
class entity
transportation.bridge m.077rmm
transportation.bridge transportation.bridge_type
Bridge Retractable bridge
none none
transportation.bridge.bridge_type
Bridge Type
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.bridge . 
VALUES ?x1 { :m.077rmm } 
?x0 :transportation.bridge.bridge_type ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND transportation.bridge (JOIN transportation.bridge.bridge_type m.077rmm))