question: Tranquilizers affect which of the two common neurotransmitters ?
answer: gamma-aminobutyric acid ( GABA )
turker_answer: Tranquilizers affect gamma-aminobutyric acid ( GABA ) , the two common neurotransmitters .
rule-based: Tranquilizers affect gamma-aminobutyric acid ( GABA the two common neurotransmitters .