19323
The NMR , IR , and computational analyses suggest that phenol - type tautomers of the pyrazolone ring are the active pharmacophore with the arylazanylpyrazolone analogues .
 Chemical: phenol; Chemical: pyrazolone; Chemical: arylazanylpyrazolone
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: phenol, pyrazolone, arylazanylpyrazolone 
Answer:
 Chemical: phenol; Chemical: pyrazolone; Chemical: arylazanylpyrazolone