In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Input: Consider Input: Question: The organometallic react with the nitriles giving:
Options: <0> Amino acids. <1> Lactones. <2> Alcohols <3> Ketones <4> None of the above.

Output: chemistry

Input: Consider Input: Question: Enzymatic regulation by reversible covalent modification:
Options: <0> It involves the breaking of the peptide bond. <1> It requires the action of another enzyme. <2> It always involves phosphorylation reaction. <3> It never affects allosteric enzymes. <4> The enzyme never comes in two forms.

Output: biology

Input: Consider Input: Question: For which of the following children's problems has the effectiveness of the symbolic modeling technique been demonstrated?
Options: <0> Childhood depression <1> Behavioral disorders associated with ADHD. <2> The autism <3> The shyness. <4> The selective mutism.
Output: psychology