12748
RbgA , unlike many members of the Ras superfamily of GTPases , lacks a defined catalytic residue for carrying out guanosine triphosphate ( GTP ) hydrolysis .
 Chemical: guanosine triphosphate; Chemical: GTP
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: guanosine triphosphate, GTP 
Answer:
 Chemical: guanosine triphosphate; Chemical: GTP