74902
At first it was hypothesized that the line might be due to an unknown element , which was named nebulium - a similar idea had led to the discovery of helium through analysis of the Sun 's spectrum in 1868 .
 astronomical object: Sun
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: Sun 
Answer:
 astronomical object: Sun