3323
The bulk , composition and mass of Adrastea are not known , but assuming that its mean density is like that of Amalthea , around 0.86 " g / cm , its mass can be estimated at about 2 " kg .
 Adrastea, Amalthea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Adrastea, Amalthea