12768
Much attention has focused on the series of sequence elements upstream of the transcriptional initiation site in the U3 region of the LTR including the Sp1 and NF-kappaB binding sites .
 protein: NF-kappaB; protein: Sp1; DNA: U3 region; DNA: LTR; DNA: transcriptional initiation site; DNA: binding sites
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: NF-kappaB, Sp1, U3 region, LTR, transcriptional initiation site, binding sites 
Answer:
 protein: NF-kappaB; protein: Sp1; DNA: U3 region; DNA: LTR; DNA: transcriptional initiation site; DNA: binding sites