76599
It consists of a spectroscopic binary system composed of the Wolf–Rayet star ( spectral type : WC5 or 6 ) and an O-type main-sequence star ( spectral type : O6 or O7 ) that orbit each other every 19 days and a blue supergiant ( spectral type : O9 .
 astronomical object: Wolf–Rayet 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: Wolf–Rayet star 
Answer:
 astronomical object: Wolf–Rayet star