Task: Question Answering
Input (English): Question: Which of the following alcohols has the lowest pKa value ?: 
 Options:  <1> Ethanol. <2> 2-Chloroethanol. <3> 2-Propanol. <4> 2,2,2-Trifluoroethanol. <5> 1,1-Dimethylethanol.
Output (English): 4