2707
Decreased cortical GABA synthesis did increase locomotor activity ; this may reflect the positive symptoms of schizophrenia .
 Chemical: GABA
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: GABA 
Answer:
 Chemical: GABA