9456
The complex on the proximal site ( NF kappa B2 ) appears to be composed of p50 and relB .
 ( protein: p50, None) , ( DNA: proximal site, None) , ( protein: relB, None) , ( protein: NF kappa B2, 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: p50, None) , ( DNA: proximal site, None) , ( protein: relB, None) , ( protein: NF kappa B2, None) 