80863
The proportion of C-types may actually be greater than this , because C-types are much darker ( and therefore less detectable ) than most other asteroid types except for D-types and others that are mostly at the extreme outer edge of the asteroid belt .
 astronomical object: D-types
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: D-types 
Answer:
 astronomical object: D-types