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The HB9 gene is composed of 3 exons spread over 6 kilobases of DNA.
 DNA: HB9; DNA: HB9 gene; DNA: exons
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: HB9, HB9 gene, exons 
Answer:
 DNA: HB9; DNA: HB9 gene; DNA: exons