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: In a potentiometry at zero intensity the electrode: 
 Options:  <0> Indicator always measures balance potentials. <1> Indicator measures the half-wave potential. <2> Indicator can measure a mixed potential. <3> Reference is always a calomel platinum electrode. <4> Indicator is always a platinum electrode.

Output: chemistry


Input: Consider Input: Question: The covers of connective tissue that surround, protect and maintain the brain and spinal cord within the cranial cavity and the spinal canal are called meninges. Which of the following statements is correct? 
 Options:  <0> The meninges are not made up of connective tissue. <1> The pia mater adheres to the brain and spinal cord. <2> The arachnoid is the thickest and most external. <3> The dura adheres to the inner surface of the arachnoid. <4> The meninges only cover the brain.

Output: pharmacology


Input: Consider Input: Question: A potentiometric titration is always done at i = 0: 
 Options:  <0> Yes, because that is where the Nernst equation is fulfilled. <1> Yes, because it is an instrumental requirement. <2> No, because there are potentiometric titrations at constant i. <3> No, because potentiometric titrations are never made at i = 0. <4> Yes, as long as an indicator electrode and a reference electrode are used.


Output: chemistry