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: Indicate which of the following is an alteration of the pyrimidine metabolism: 
 Options:  <0> Thrombophilia <1> Phenylketonuria <2> Wilson's disease <3> Urine disease with the smell of maple syrup. <4> Orotic hereditary acidity.

Ex Output:
pharmacology


Ex Input:
Question: Relating to topoisomerases: 
 Options:  <0> They are enzymes that convert the D-amino acids into L-amino acids. <1> They are enzymes that synthesize DNA. <2> They are enzymes that participate in the union of the subunits of the ribosome. <3> They are enzymes that denature DNA. <4> DNA gyrase is a special toposiomerase.

Ex Output:
chemistry


Ex Input:
Question: The reaction of a halogenated derivative with triphenylphosphine leads to a salt of: 
 Options:  <0> Sulfonium. <1> Diazonio. <2> Ammonium. <3> Pyridinium <4> Phosphonium

Ex Output:

chemistry