5927
The G - quadruplex ligands database ( G4LDB , http : / / www . g4ldb . org ) provides a unique collection of reported G - quadruplex ligands to streamline ligand / drug discovery targeting G - quadruplexes .
 None
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:  
Answer:
 None