23983
Of these , 58 " stars are known in the field of navigational astronomy as " selected stars " , including 19 " stars of the first magnitude , 38 " stars of the second magnitude , and Polaris .
 astronomical object: Polaris
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: Polaris 
Answer:
 astronomical object: Polaris