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Gerald Ian d'Acres Backhouse ( 6 December 1912 – 28 December 1941 ) is an Australia n athlete who competed in the 1936 Summer Olympics .
 person: Gerald; person: Backhouse; location: 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: Gerald, Backhouse, Australia 
Answer:
 person: Gerald; person: Backhouse; location: Australia