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 lithium dialkyl-heptarate reacts with alkyl halides to produce, by formation of carbon-carbon bonds between the alkyl group of the halide and the alkyl group of the dialkyl acetate: 
 Options:  <0> Alcanes. <1> Alquenos <2> Alquinos. <3> Aromatics <4> Piranos.

Ex Output:
chemistry


Ex Input:
Question: They are involved in the lytic action of cytotoxic T lymphocytes: 
 Options:  <0> Granzimas <1> Opsonins. <2> Histamines <3> Integrins <4> Cathepsins.

Ex Output:
biology


Ex Input:
Question: In relation to enzymatic inhibition: 
 Options:  <0> An irreversible inhibitor causes the denaturation of the enzyme. <1> The competing inhibitors bind to the substrate of the reaction. <2> A non-competitive inhibitor does not need to bind to the enzyme to exert its activity. <3> All inhibitors modify Vmax. <4> A competitive inhibitor increases the value of Km.

Ex Output:

biology