which unit of length is affiliated with a measurement system whose mass units include cental?
Entity Entity Entity Entity Entity Entity Entity
m.04vb3 m.01crvy m.03th6 m.02mr9z m.0355rq m.05gwxt m.087tz
Mile Foot Inch Rod Chain Link Yard
class class entity
measurement_unit.distance_unit measurement_unit.measurement_system m.02xh69r
measurement_unit.distance_unit measurement_unit.measurement_system measurement_unit.mass_unit
Unit of Length Measurement System Cental
none none none
measurement_unit.distance_unit.measurement_system measurement_unit.measurement_system.weight_units
Measurement System Mass Units
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 :measurement_unit.distance_unit . 
?x1 :type.object.type :measurement_unit.measurement_system . 
VALUES ?x2 { :m.02xh69r } 
?x0 :measurement_unit.distance_unit.measurement_system ?x1 . 
?x1 :measurement_unit.measurement_system.weight_units ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND measurement_unit.distance_unit (JOIN measurement_unit.distance_unit.measurement_system (JOIN measurement_unit.measurement_system.weight_units m.02xh69r)))