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In the second half of the nineteenth century and early twentieth century the literary genre known as " costumbrismo " became popular ; great writers of this period were Tomás Carrasquilla , Jorge Isaacs and Rafael Pombo ( the latter of whom wrote notable works of children 's literature ) .
 Tomás Carrasquilla, Jorge Isaacs, Rafael Pombo
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Option: location, person, organization 
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Answer:
 Tomás Carrasquilla, Jorge Isaacs, Rafael Pombo