the guage (mm) 1668.0 is in what locomotive class?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.0czdr0x m.047bc0p m.0cz8vpd m.05p69gh m.0c41bcx m.09rx6mk m.0cz8_4d m.09gc0vz m.05mwxlj m.05mqn9n m.0cz9qxv m.0j29b7y
RENFE Class 311 RENFE Class 276 RENFE Class 319 RENFE Class 354 CP Class 4700 CP Class 5600 RENFE Class 310 RENFE Class 350 RENFE Class 352 RENFE Class 340 RENFE Class 309 RENFE class 313
class literal
rail.locomotive_class 1668.0^^http://www.w3.org/2001/XMLSchema#float
rail.locomotive_class type.float
Locomotive class 1668.0
none none
rail.locomotive_class.gauge_mm
Gauge (mm)
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 :rail.locomotive_class . 
VALUES ?x1 { "1668.0"^^<http://www.w3.org/2001/XMLSchema#float> } 
?x0 :rail.locomotive_class.gauge_mm ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND rail.locomotive_class (JOIN rail.locomotive_class.gauge_mm 1668.0^^http://www.w3.org/2001/XMLSchema#float))