5928
G - quadruplexes are guanine - rich nucleic acid sequences in human telomeres and gene promoter regions .
 Chemical: guanine; Chemical: nucleic acid
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: guanine, nucleic acid 
Answer:
 Chemical: guanine; Chemical: nucleic acid