28215
This is a Be star with a stellar classification of B6 " IVe , matching the spectrum of an aging subgiant with a circumstellar disk of ionized gas .
 astronomical object: Be star
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: Be star 
Answer:
 astronomical object: Be star