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: To measure the pulmonary wedge pressure (PEP) by means of a pulmonary artery catheter, it is advisable to take into account that: 
 Options:  <0> It is not necessary to inflate the ball. <1> The catheter should always be inserted with the balloon inflated, but at half the recommended volume. <2> The volume of balloon inflation is usually 1.5 ml of air. <3> The volume of inflation of the balloon is usually 3 ml of air. <4> You have to leave the balloon always inflated after making the determinations of PEP.

Output: nursery


Input: Consider Input: Question: The hepatic synthesis of methionine from homocysteine ​​requires: 
 Options:  <0> N5, N10 methenyl-tetrahydrofolate. <1> N10-formyl-tetrahydrofolate. <2> N5-formimino-tetrahydrofolate. <3> N5-methyl-tetrahydrofolate. <4> N5, N10 methylene-tetrahydrofolate.

Output: chemistry


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