what ac power can handle more than 50.0 hz?
Entity
m.05tp0h
Europlug
class class class literal
engineering.power_plug_standard engineering.power_plug_standard_type engineering.mains_power 50.0^^http://www.w3.org/2001/XMLSchema#float
engineering.power_plug_standard engineering.power_plug_standard_type engineering.mains_power type.float
Power plug standard Power plug standard type Mains power 50.0
none none none >=
engineering.power_plug_standard.plug_type engineering.power_plug_standard_type.compatible_power_systems engineering.mains_power.ac_frequency
Type Compatible power systems AC Frequency
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 :engineering.power_plug_standard . 
?x1 :type.object.type :engineering.power_plug_standard_type . 
?x2 :type.object.type :engineering.mains_power . 
FILTER (?x3 >= "50.0"^^<http://www.w3.org/2001/XMLSchema#float>)
?x0 :engineering.power_plug_standard.plug_type ?x1 . 
?x1 :engineering.power_plug_standard_type.compatible_power_systems ?x2 . 
?x2 :engineering.mains_power.ac_frequency ?x3 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x0 != ?x3 && ?x1 != ?x2 && ?x1 != ?x3 && ?x2 != ?x3  )
}
}
(AND engineering.power_plug_standard (JOIN engineering.power_plug_standard.plug_type (JOIN engineering.power_plug_standard_type.compatible_power_systems (ge engineering.mains_power.ac_frequency 50.0^^http://www.w3.org/2001/XMLSchema#float))))