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A state memorial service was held on 5 November 2014 in the Sydney Town Hall and was led by Kerry O'Brien .
 location: Sydney Town Hall; person: Kerry O'Brien
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 location: Sydney Town Hall; person: Kerry O'Brien