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.

Ex Input:
Question: The reaction of 1H-indole with electrophiles takes place selectively on the atom in position: 
 Options:  <0> one. <1> two. <2> 3. <3> Four. <4> 5.

Ex Output:
chemistry


Ex Input:
Question: The papillary muscles: 
 Options:  <0> They contract atrio-ventricular valves. <1> They prevent the reflux of blood to the atria. <2> They avoid the eversion of the semilunar valves. <3> They form the interventricular septum. <4> They are formed by visceral smooth muscle.

Ex Output:
biology


Ex Input:
Question: Which of the following agents has a vasoconstrictor effect? 
 Options:  <0> Endothelin <1> Nitric oxide. <2> Nitrogen. <3> Blastoestimulin. <4> Glycine

Ex Output:

pharmacology