57251
Chinese astronomers deemed nine stars to make up the asterism , adding Pi and Rho Coronae Borealis .
 astronomical object: Pi; astronomical object: Rho Coronae Borealis
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: Pi, Rho Coronae Borealis 
Answer:
 astronomical object: Pi; astronomical object: Rho Coronae Borealis