Definition: 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: Question: The mission of the spliceosome is:
Options: <0> Ensure that the transfer RNAs adopt the trefoil configuration. <1> Prevent ribosomes from entering the nucleus. <2> Perform polyadenylation of messenger RNA (mRNA). <3> Degrade defective proteins. <4> Facilitate the maturation of the mRNA precursor, since it approximates the splice points.
Output:
pharmacology