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In previous studies we have demonstrated that the gamma - aminobutryic acid - A ( GABA - A ) receptor antagonist oroxylin A has an awakening effect and it also represses ADHD - like behaviors ( hyperactivity , impulsivity and inattention ) in the spontaneously hypertensive rat ( SHR ) model of attention - deficit hyperactivity disorder ( ADHD ) .
 Chemical: gamma - aminobutryic acid; Chemical: GABA; Chemical: oroxylin A
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: gamma - aminobutryic acid; Chemical: GABA; Chemical: oroxylin A