21837
But last year Hitachi Ltd. surprised Japan 's electronics industry when it accused Korea 's Samsung Electronics Co. of using Hitachi technology to make dynamic random - access memory chips .
 date: last year; organization: Hitachi Ltd.; geographical social political: Japan; geographical social political: Korea; organization: Samsung Electronics Co.; organization: Hitachi
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: last year, Hitachi Ltd., Japan, Korea, Samsung Electronics Co., Hitachi 
Answer:
 date: last year; organization: Hitachi Ltd.; geographical social political: Japan; geographical social political: Korea; organization: Samsung Electronics Co.; organization: Hitachi