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.

Q: Question: An 80-year-old man is admitted with a sudden picture of aphasia and right hemiparesis. As background highlights, hypertension, well controlled diet and cognitive impairment in the last year under study by his neurologist. Emergency cranial CT demonstrates a left frontal lobar hematoma without contrast enhancement. What is the most likely cause of the hematoma? 
 Options:  <0> Arteriovenous malformation masked by the acute hematoma. <1> Chronic arterial hypertension. <2> Vasculitis isolated from the nervous system. <3> Brain tumor. <4> Amyloid cerebral angiopathy (congophilic angiopathy).

A: medicine
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Q: Question: Which of the following functions is not typical of the stomach? 
 Options:  <0> Food storage. <1> Protein digestion. <2> Secretion of intrinsic factor. <3> Secretion of hormones <4> Amylase secretion.

A: pharmacology
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Q: Question: A calomel electrode: 
 Options:  <0> It is a mercury indicator electrode. <1> It is a reference electrode that contains nitrate ions. <2> It is an indicator electrode for nitrate ions. <3> It is a reference electrode that uses silver and silver chloride. <4> It is a reference electrode that contains a saturated solution of mercury chloride (I).

A:
chemistry
****