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Becker commenced his career as a Returning Officer in South Australia in 1967 .
 person: Becker; location: South 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: Becker, South Australia 
Answer:
 person: Becker; location: South Australia