Task: Text Categorization
Input (English): Question: The α-keratin consists of: 
 Options:  <0> Two dextrorotative α-propellers coiled to form a left-handed helix. <1> Two dextrorotary propellers coiled to form a left-handed helix. <2> Two levorotylar helices coiled to form a levorotatory helix. <3> Two levógiras α helices coiled to form a dextrorotatory helix. <4> One helix α levorotatory and one dextrorotatory coiled to form a levorotatory helix.
Output (English): chemistry