Task: Text Categorization
Input (English): Question: Which of the following alcohols has the lowest pKa value ?: 
 Options:  <0> Ethanol. <1> 2-Chloroethanol. <2> 2-Propanol. <3> 2,2,2-Trifluoroethanol. <4> 1,1-Dimethylethanol.
Output (English): chemistry