54973
Lycabettus , Philopappos hill and the area around it , including Pnyx and Ardettos hill , are planted with pines and other trees , with the character of a small forest rather than typical metropolitan parkland .
 Lycabettus, Philopappos, Pnyx, Ardettos
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lycabettus, Philopappos, Pnyx, Ardettos