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In 1927 , Gebrüder Steidinger ( Steidinger Bros. ) adopted the name Dual in reference to the dual-mode power supplies it pioneered .
 organization: Dual
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Dual 
Answer:
 organization: Dual