19077
Experimental results show clearly that neutral V2O5 can react with n - butane ( C4H10 ) to generate V2O5H2 , indicating double hydrogen atom transfer from C4H10 to V2O5 to produce C4H8 .
 Chemical: V2O5; Chemical: n - butane; Chemical: C4H10; Chemical: V2O5H2; Chemical: hydrogen; Chemical: C4H10; Chemical: V2O5; Chemical: C4H8
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: V2O5, n - butane, C4H10, V2O5H2, hydrogen, C4H10, V2O5, C4H8 
Answer:
 Chemical: V2O5; Chemical: n - butane; Chemical: C4H10; Chemical: V2O5H2; Chemical: hydrogen; Chemical: C4H10; Chemical: V2O5; Chemical: C4H8