123596
Photographing from precarious vantage points on the bridge itself , sometimes a hundred metres above Sydney Harbour , his work sets the construction against the harbour and the growing city and uses the figures of the workers to represent the scale of this Depression - era engineering feat .
 location: Sydney
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: Sydney 
Answer:
 location: Sydney