what kinds of power plugs work with minimal nominal system voltage?
Entity Entity
m.08ny24t m.08ny25y
Power plug Type C Power plug Type F
class class literal
engineering.power_plug_standard_type engineering.mains_power 0^^http://www.w3.org/2001/XMLSchema#int
engineering.power_plug_standard_type engineering.mains_power type.float
Power plug standard type Mains power 0
none none argmin
engineering.mains_power.compatible_plugs engineering.mains_power.nominal_voltage
Compatible plugs Nominal system voltage
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_type . 
?x1 :type.object.type :engineering.mains_power . 
{
SELECT (MIN(?y2) AS ?x2)  WHERE { 
?y0 :type.object.type :engineering.power_plug_standard_type . 
?y1 :type.object.type :engineering.mains_power . 
?y1 :engineering.mains_power.compatible_plugs ?y0 . 
?y1 :engineering.mains_power.nominal_voltage ?y2 . 
FILTER ( ?y0 != ?y1 && ?y0 != ?y2 && ?y1 != ?y2  )
}
}
?x1 :engineering.mains_power.compatible_plugs ?x0 . 
?x1 :engineering.mains_power.nominal_voltage ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(ARGMIN engineering.power_plug_standard_type (JOIN (R engineering.mains_power.compatible_plugs) engineering.mains_power.nominal_voltage))