TASK DEFINITION: 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.
PROBLEM: Question: The reaction conditions for transforming nonanamide into octanamine and carbon dioxide are: 
 Options:  <0> H2, metallic catalyst. <1> Excess of CH3I, K2 CO3. <2> Cl2, NaOH, H2O. <3> LiAlH4, diethyl ether and then hydrolysis. <4> CH2N2, diethyl ether.

SOLUTION: chemistry

PROBLEM: Question: Which of the following statements about focal nodular hyperplasia of the liver is true? 
 Options:  <0> It is considered that its appearance is related to the consumption of contraceptives. <1> The risk of breakage hemoperitoneum is similar to that of the adenoma. <2> There is a risk of tumor degeneration. <3> It behaves as a focal hypovascular lesion in computed tomography with contrast administration. <4> In the histological study of the lesion, in addition to hepatocytes, bile ducts and other liver cells can be observed.

SOLUTION: medicine

PROBLEM: Question: The proteasome: 
 Options:  <0> It is formed by 21 homologous subunits organized in 3 rings. <1> It is a protein complex that catalyzes the hydrolysis of ubiquitinated proteins. <2> It is found only in animal eukaryotic cells. <3> Digest acylated proteins. <4> It is activated by a drug, bertezomil, in therapy for multiple myeloma.

SOLUTION:
chemistry