40265
In 391 BC , Celts " who had their homes beyond the Alps streamed through the passes in great strength and seized the territory that lay between the Apennine mountains and the Alps " according to Diodorus Siculus .
 Alps, Apennine, Alps, Diodorus Siculus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Alps, Apennine, Alps, Diodorus Siculus