11919
Pressure has been building on the Big Board in the past two weeks to do something about market volatility , which many investors say is caused by program trading .
 organization: the Big Board; date: the past two weeks
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 Big Board, the past two weeks 
Answer:
 organization: the Big Board; date: the past two weeks