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Yang Hung - jen , a PhD student at National Taiwan University 's Graduate Institute of Sociology , came to Linpien a year ago to research his thesis on the renewal of the local community .
 person: Yang Hung - jen; work of art: PhD; organization: National Taiwan University 's; organization: Graduate Institute of Sociology; geographical social political: Linpien; date: a year ago
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:
 person: Yang Hung - jen; work of art: PhD; organization: National Taiwan University 's; organization: Graduate Institute of Sociology; geographical social political: Linpien; date: a year ago