18680
Nitric oxide is a potent regulator of soluble guanylate cyclase ( sGC ) , which drives cGMP production , causing vasorelaxation .
 Chemical: Nitric oxide; Chemical: guanylate; Chemical: cGMP
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: Nitric oxide, guanylate, cGMP 
Answer:
 Chemical: Nitric oxide; Chemical: guanylate; Chemical: cGMP