3478
The Winbond Knowledge Management Center , led by assistant vice president George Tsao , was founded a half year ago to provide overall management of the company 's scattered knowledge assets , and to bring to the surface the intellectual treasures locked in employees ' heads .
 organization: The Winbond Knowledge Management Center; person: George Tsao; date: a half year ago
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: The Winbond Knowledge Management Center, George Tsao, a half year ago 
Answer:
 organization: The Winbond Knowledge Management Center; person: George Tsao; date: a half year ago