16563
The country around it is stated by Ammianus Marcellinus and Theophylact Simocatta to have been extremely arid , which rendered it equally difficult to take or to relieve from a distance .
 person: Ammianus Marcellinus; person: Theophylact Simocatta
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Ammianus Marcellinus, Theophylact Simocatta 
Answer:
 person: Ammianus Marcellinus; person: Theophylact Simocatta