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.

Example Input: Question: In a Gram positive pathogen involved in pharyngitis and rheumatic fever: 
 Options:  <0> Staphylococcus aureus. <1> Micrococcus luteus. <2> Moraxella catarrhalis. <3> Haemophilus influenzae. <4> Streptococcus pyogenes.
Example Output: biology

Example Input: Question: The diagnosis of sarcoidosis is based on: 
 Options:  <0> Clinical-radiological compatible picture and presence of non-caseating granulomas in one or more organs, with negative cultures of mycobacteria and fungi. <1> Elevation of the serum level of the angiotensin conversion enzyme in a patient with a compatible clinical-radiological picture. <2> Characteristic radiological findings in high-resolution computed tomography of the chest in a patient with clinical suspicion. <3> Presence of lymphocytic alveolitis with predominance of CD4 + lymphocytes in bronchoalveolar lavage in a patient with a compatible clinical-radiological picture. <4> Finding of granulomatous cellularity in a fine needle aspiration puncture (FNAP) of an affected organ in a patient with a compatible clinical-radiological picture.
Example Output: medicine

Example Input: Question: In the formation of the skin they intervene: 
 Options:  <0> Only the ectoderm. <1> The ectoderm, mesoderm and cells of the neural crest. <2> The ectoderm and mesoderm. <3> The ectoderm and cells of the neural crest. <4> Only the mesoderm.
Example Output:
biology