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.

Example Input: Question: In the synthesis of DNA, the quinolones act:
Options: <0> Joining the double helix and thus blocking the progress of the replication fork. <1> Interlacing in the double helix and thus causing errors in the transcription. <2> On DNA gyrase. <3> As nucleotide analogs that are incorporated into DNA. <4> About DNA polymerases.
Example Output: biology

Example Input: Question: The main mediators of the antibody-dependent cellular cytotoxicdiad are:
Options: <0> The eosinophils. <1> The NK lymphocytes. <2> The mast cells <3> The neutrophils. <4> The CD8 + lymphocytes.
Example Output: biology

Example Input: Question: In oxidative stress it is characteristic:
Options: <0> Decrease in the concentration of oxidized glutathione. <1> Increase in the concentration of reduced glutathione. <2> Decreased production of reactive oxygen species. <3> Increase in the production of reactive oxygen species. <4> None of the previous are true.
Example Output:
chemistry