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The ongoing competition between companies and nations to create true " HDTV " spanned the entire 20th century , as each new system became more HD than the last .
 organization: HDTV; organization: HD
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: HDTV, HD 
Answer:
 organization: HDTV; organization: HD