22703
The three largest objects in the asteroid belt , Ceres , Pallas , and Vesta , grew to the stage of protoplanets .
 Ceres, Pallas, Vesta
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ceres, Pallas, Vesta