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Oldenburg originally designed the sculpture to be painted red , but he abandoned that idea to distinguish it from Chicago 's Flamingo sculpture by Alexander Calder .
 Oldenburg, Alexander Calder
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Oldenburg, Alexander Calder