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: They are primary lymphoid organs: 
 Options:  <0> Spleen and lymph nodes <1> The spleen and bone marrow. <2> The thymus and the bone marrow. <3> The pineal gland <4> Peyer's plates and tonsils.

Ex Output:
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: HLA class I molecules are expressed in: 
 Options:  <0> Leukocytes <1> Erythrocytes <2> All nucleated cells. <3> Antigen presenting cells. <4> NK lymphocytes.

Ex Output:

biology