55100
On 17 April 2014 , the discovery of the Earth-size exoplanet Kepler-186 f , 500 light-years from Earth , was publicly announced ; it is the first Earth-size planet to be discovered in the habitable zone and it has been hypothesized that there may be liquid water on its surface .
 astronomical object: Kepler-186 f; astronomical object: Earth
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: Kepler-186 f, Earth 
Answer:
 astronomical object: Kepler-186 f; astronomical object: Earth