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Relation: subclass

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ElectricSpeakerDevice4A combination SpeakerDevice and ElectricDevice.^
    Loudspeaker2A SpeakerDevice for projecting sound through the air. A loudspeaker produces louder sound than ea...^
        ComputerLoudspeaker1A Loudspeaker which is also a ComputerOutputDevice, whether or not it is currently connected to...^

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