8261
Though it does n't have much of a hinterland , its geographic location has proved historically important , as one can see from the prehistoric cultures unearthed at the Ta - pen - keng and Shih - san - hang archeological sites .
 location: Ta - pen - keng; location: Shih - san - hang
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 location: Ta - pen - keng; location: Shih - san - hang