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The Tumen River development program , aiming at building up the Tumen Delta , where the three countries of China , Russia and North Korea meet , into a cosmopolitan hub for the circulation of material and a center for economy and trade , was initially proposed by Chinese experts such as Shishen Ding , etc .
 location: Tumen River; location: the Tumen Delta; cardinal: three; geographical social political: China; geographical social political: Russia; geographical social political: North Korea; national religious political: Chinese; person: Shishen Ding
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: Tumen River; location: the Tumen Delta; cardinal: three; geographical social political: China; geographical social political: Russia; geographical social political: North Korea; national religious political: Chinese; person: Shishen Ding