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Previously, we analyzed the proximal IL-4 promoter in directing Th2-specific activity .
 protein: IL-4; DNA: proximal IL-4 promoter; DNA: IL-4 promoter
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: IL-4, proximal IL-4 promoter, IL-4 promoter 
Answer:
 protein: IL-4; DNA: proximal IL-4 promoter; DNA: IL-4 promoter