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Dragons of the Hourglass Mage is a fantasy novel by Margaret Weis and Tracy Hickman , based on the Dragonlance fictional campaign setting .
 Margaret Weis, Tracy Hickman
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Margaret Weis, Tracy Hickman