5089
Privately , exchange officials worry that without a hospitable system for program trading at the Big Board , billions of dollars in trading will simply migrate to overseas exchanges such as London 's .
 organization: the Big Board; money: billions of dollars; geographical social political: London
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, billions of dollars, London 
Answer:
 organization: the Big Board; money: billions of dollars; geographical social political: London