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Following an accident in January 1971 and a series of disastrous collisions with wreckage in February , the Dover TSS , the world 's first radar-controlled traffic separation scheme , was set up by the International Maritime Organization .
 location: Dover; organization: International Maritime Organization
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: Dover, International Maritime Organization 
Answer:
 location: Dover; organization: International Maritime Organization