19074
Double C - H bond activation of hydrocarbons by a gas phase neutral oxide cluster : the importance of spin state .
 Chemical: C - H; Chemical: hydrocarbons; Chemical: oxide
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: C - H, hydrocarbons, oxide 
Answer:
 Chemical: C - H; Chemical: hydrocarbons; Chemical: oxide