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The whole brain GABA estimation of brain homogenate indicated that the anticonvulsant activity of above mentioned quinazolinone derivatives might be due to an increased GABA concentration .
 Chemical: GABA; Chemical: quinazolinone; Chemical: GABA
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: GABA; Chemical: quinazolinone; Chemical: GABA