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" Geophysics " ( ) is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment , and the use of quantitative methods for their analysis .
 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: Earth 
Answer:
 astronomical object: Earth