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This means , that if Venus is visible beside the moon , after eight years the two will be again close together near the same date of the calendar .
 astronomical object: Venus; astronomical object: moon
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: Venus, moon 
Answer:
 astronomical object: Venus; astronomical object: moon