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: The Grignard reagents attack the epoxides to give, after the appropriate hydrolysis: 
 Options:  <0> Carboxylic acids. <1> Cyclic amides. <2> Open aliphatic chains. <3> Open-chain alcohols. <4> Cyclic ethers.

Ex Output:
pharmacology


Ex Input:
Question: In a three-point test crossover study, a negative interference indicates that: 
 Options:  <0> More double crossings have occurred than expected. <1> There have been fewer double crossings than expected. <2> The match coefficient is less than 1. <3> A simple crossover decreases the likelihood of a double crossover occurring. <4> There have been fewer simple cross-links than expected.

Ex Output:
biology


Ex Input:
Question: Stimulates the separation of DNA strands during replication: 
 Options:  <0> Primasa <1> DNA ligase. <2> The single chain DNA binding proteins. <3> Helicasa <4> DNA polymerase I.

Ex Output:

biology