joule per cubic metre has which unit?
Entity
m.05ggcb
Energy density
class entity
measurement_unit.dimension m.02sj51f
measurement_unit.dimension freebase.unit_profile
Dimension Joule per cubic metre
none none
measurement_unit.dimension.si_base_unit
SI Base Unit
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.dimension . 
VALUES ?x1 { :m.02sj51f } 
?x0 :measurement_unit.dimension.si_base_unit ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND measurement_unit.dimension (JOIN measurement_unit.dimension.si_base_unit m.02sj51f))