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From the various revisions to trade law adopted by the PRC last year , Chang Han - wen extrapolates that the PRC both wants to protect its uncompetitive state firms and turn from low - tech processing to high - tech production .
 geographical social political: PRC; date: last year; person: Chang Han - wen; geographical social political: PRC
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:
 geographical social political: PRC; date: last year; person: Chang Han - wen; geographical social political: PRC