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He was a strong advocate for art photography ; on his return to Sydney ( 1916 ) he joined ( in 1917 ) the Sydney Camera Circle whose " manifesto " had been drawn up and signed on 28 November 1916 by the founding group of six photographers ; Harold Cazneaux , Cecil Bostock , James Stening , W.S. White , Malcolm McKinnon and James Paton .
 location: Sydney; location: Sydney; person: Harold Cazneaux; person: Cecil Bostock
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Sydney; location: Sydney; person: Harold Cazneaux; person: Cecil Bostock