1871
In vivo protein-DNA contacts are detectable at Ii kappa B-1 in cell lines in which this site is functional as either a positive or negative regulator .
 cell line: cell lines; DNA: Ii kappa B-1
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: cell lines, Ii kappa B-1 
Answer:
 cell line: cell lines; DNA: Ii kappa B-1