What is the fine-grained topic of the following text: Jonathan Strahan is the editor of Eidolon: The Journal of Australian Science Fiction and Fantasy, three time winner of the Ditmar Award, an inaugural judge of the Aurealis Awards and the co-editor of The Years' Best Australian Science Fiction and Fantasy anthology series from HarperCollins Publishers. Only return the topic.
Jonathan Strahan's role and achievements in Australian Science Fiction and Fantasy literature.