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 negative feedback regulation of thyroid hormone is as follows: 
 Options:  <0> High concentrations of circulating free T3 and T4 that elevate HRT. <1> High concentrations of circulating free T3 and T4 that raise TSH. <2> High concentrations of circulating free T3 and T4 that decrease TRH. <3> Decreased TRH that elevates TSH. <4> Decreased TSH that elevates HRT.

Output: nursery


Input: Consider Input: Question: A coulometric evaluation: 
 Options:  <0> You do not need the current performance to be 100%. <1> It does not need an indicator system of the end point. <2> Always use a potentiostatic system. <3> It uses a titrant that is generated electrolytically. <4> You need a burette to add the titrant.

Output: chemistry


Input: Consider Input: Question: The Iperite or mustard gas is a: 
 Options:  <0> Vesicant agent. <1> Biological weapon <2> Phytotoxic agent. <3> Incendiary agent <4> Neurotoxic agent.


Output: pharmacology