11516
Interest in structure - based G - protein - coupled receptor ( GPCR ) ligand discovery is huge , given that almost 30 % of all approved drugs belong to this category of active compounds .
 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