8127
At 15.6 sq. km in area , it is the second smallest of Pingtung County 's 33 townships , and has a population of around 23,000 .
 quantity: 15.6 sq. km; ordinal: second; geographical social political: Pingtung County 's; cardinal: 33; cardinal: 23,000
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:
 quantity: 15.6 sq. km; ordinal: second; geographical social political: Pingtung County 's; cardinal: 33; cardinal: 23,000