60708
The drill features three troops ( turmae ) — each made up of twelve riders , a leader , and two armor-bearers — who perform intricate drills on horseback : Complex intertwining manoeuvres as a display of horsemanship were characteristic of Roman cavalry reviews on the parade ground .
 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