In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Input: Consider Input: Question: They are directly involved in allergic reactions: 
 Options:  <1> T lymphocytes. <2> Dendritic cells <3> Monocytes <4> Platelets. <5> Mastocytes

Output: 5


Input: Consider Input: Question: Liquid chromatography using linked stationary phases can be divided into normal phase and reverse phase phases. In this context it can be said that: 
 Options:  <1> The main separation mechanism in reverse phase is the distribution, while adsorption also plays a very important role in the normal phase. <2> In normal phase chromatography, a large number of non-polar stationary phases can be used. <3> The main separation mechanism in normal phase is the distribution, while the adsorption plays a very important role in the reverse phase. <4> In reverse phase chromatography, the stationary phase is polar and the non-polar eluents. <5> In reverse phase chromatography, a large number of polar stationary phases can be used.

Output: 1


Input: Consider Input: 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: 4