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Positive and negative regulation of granulocyte-macrophage colony-stimulating factor promoter activity by AML1-related transcription factor , PEBP2 .
 ( protein: PEBP2, None) , ( protein: AML1-related transcription factor, None) , ( protein: granulocyte-macrophage colony-stimulating factor, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: PEBP2, None) , ( protein: AML1-related transcription factor, None) , ( protein: granulocyte-macrophage colony-stimulating factor, None) 