105604
Thus , Jupiter and Saturn are gas giants , and Uranus and Neptune are ice giants , even though the vast majority of the " gas " and " ice " in their interiors is a hot , highly dense fluid that gets denser as the center of the planet is approached .
 Jupiter, Saturn, Uranus, Neptune
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Jupiter, Saturn, Uranus, Neptune