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He was also a projector , floating his business as an ironmaster as a joint stock company at the time of the South Sea Bubble ( 1720 ) .
 organization: South Sea Bubble
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: South Sea Bubble 
Answer:
 organization: South Sea Bubble