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: 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.

Ex Output:
biology

Ex Input:
Question: The main method for the preparation of ceto esters is the reaction known as:
Options: <0> Malonic synthesis <1> Acetoacetic synthesis. <2> Condensing of Claisen. <3> Perkin reaction. <4> Hofmann reaction.

Ex Output:
pharmacology

Ex Input:
Question: The quotient between the number of live births registered in a year and the female population of reproductive age (15-49 years) refers to the concept of:
Options: <0> Crude birth rate. <1> General fertility rate. <2> Synthetic fertility index. <3> Gross reproduction rate. <4> Net reproduction rate.

Ex Output:
nursery