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She discusses gender relations under slavery and , while affirming Frederick Douglass 's and Martin Delany 's support of the equality of the sexes , argues black men in general held patriarchal attitudes toward their spouses : “ [ Freed male slaves ] wanted black women to conform to the gender norms set by white society .
 person: Frederick Douglass; person: Martin Delany
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Frederick Douglass, Martin Delany 
Answer:
 person: Frederick Douglass; person: Martin Delany