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 solubility of copper hydroxide in the presence of a high concentration of ammonia: 
 Options:  <0> Increased by formation of a complex ion of Cu2 + with NH3. <1> It is not affected because there is no common ion effect. <2> Decreases by common ion effect. <3> It decreases upon oxidation of bromide to molecular bromine. <4> It decreases because the hydroxides are more soluble in acidic medium.

Output: chemistry


Input: Consider Input: Question: A microelectrode is characterized by: 
 Options:  <0> Give answers in steady state. <1> Always need an inert electrolyte. <2> Always need a potentiostatic system. <3> Do not need a reference electrode. <4> Always need agitation.

Output: chemistry


Input: Consider Input: Question: Among the sources used to make the diagnosis of health of a community, it is essential to know: 
 Options:  <0> Census of the population. <1> Notifiable diseases registration. <2> Potable water supply. <3> Waiting lists. <4> All are correct.


Output: nursery