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: What amino acids can be bound to a sugar by an O-glycosidic bond? 
 Options:  <0> Ser and Thr. <1> Cys and Ser. <2> Asn and Thr. <3> Lys and His. <4> Val and Leu.

Output: chemistry


Input: Consider Input: Question: Aflatoxin B1 is a natural product that owes its toxicity to a product of its metabolism, very reactive, of the nature of: 
 Options:  <0> 1,2-Diol. <1> Quinonymine <2> Epoxide <3> Α, β-unsaturated carbonyl. <4> Radical hydroperoxide.

Output: pharmacology


Input: Consider Input: Question: When assessing the most appropriate contraceptive method for a person, the following should be taken into account: 
 Options:  <0> The Pearl index that reflects the percentage of non-pregnancies of a contraceptive method in relation to the number of cycles of use of this method. <1> The acceptability of the method that is determined by the absence of collateral defects. <2> The innocuousness of the method that is determined by the absence of health risks that its use may entail. <3> The motivation or sociocultural conditions such as the level of education. <4> The reversibility or surgical possibilities of recovering fertility after using the method.


Output: nursery