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She was among the first women to write in the science fiction and fantasy genres , though earlier woman writers in these genres include Clare Winger Harris , Greye La Spina , and Francis Stevens , amongst others .
 Clare Winger Harris, Greye La Spina, Francis Stevens
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Clare Winger Harris, Greye La Spina, Francis Stevens