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Michael Dann , who scheduled " December Bride " during its network run , soon realized that this was because the show had been picking up ratings from its lead-in , " I Love Lucy " , bringing rise to the industry concept of hammocking .
 Michael Dann
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Michael Dann