34276
As the event was over 400 meters in length , no semifinals where held in it and the top-8 swimmers from the preliminary heats advance directly to the single final heat .
 None
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:  
Answer:
 None