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SteamVR was first introduced for the Oculus Rift headset in 2014 , and later expanded to support other virtual reality headsets , such as the HTC Vive and Valve Index .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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