8636
Thermogravimetry experiments performed in a wide range of H ( 2 ) S and H ( 2 ) O partial pressures have shown that the ZnO sulfidation reaction rate has a nonlinear variation with H ( 2 ) S partial pressure at the same time no significant influence of water vapor on reaction kinetics has been observed .
 Chemical: H ( 2 ) S; Chemical: H ( 2 ) O; Chemical: ZnO; Chemical: H ( 2 ) S
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: H ( 2 ) S, H ( 2 ) O, ZnO, H ( 2 ) S 
Answer:
 Chemical: H ( 2 ) S; Chemical: H ( 2 ) O; Chemical: ZnO; Chemical: H ( 2 ) S