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-- If DJIA drops 400 points , Big Board halts trading for two hours .
 cardinal: 400; organization: Big Board; time: two hours
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: 400, Big Board, two hours 
Answer:
 cardinal: 400; organization: Big Board; time: two hours