123557
These are the results from the open water swimming competition at the 1991 World Aquatics Championships , which took place in Perth , Australia .
 location: Perth , Australia
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: Perth , Australia 
Answer:
 location: Perth , Australia