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Solid argon hydride ( Ar ( H ) ) has the same crystal structure as the MgZn Laves phase .
 location: MgZn Laves
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: MgZn Laves 
Answer:
 location: MgZn Laves