instruction:
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.
question:
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.
answer:
chemistry


question:
Question: In which of the following positions should a patient be placed to perform a gastroscopy? 
 Options:  <0> Right lateral decubitus. <1> Left lateral decubitus. <2> Supine decubitus <3> Trendelemburg. <4> Sims position.
answer:
nursery


question:
Question: It is a genus of strict anaerobic bacteria that produce endospores and that contain pathogenic species: 
 Options:  <0> Bacteroides. <1> Bacillus. <2> Clostridium <3> Corynebacterium <4> Mycobacterium
answer:

biology