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'.

Ex Input:
Question: What is the name of the specialty of the History of Nursing that is dedicated to the study of existing care systems in Prehistory? 
 Options:  <1> Paleodermia. <2> Neo-nursing <3> Primo Nursing. <4> Ethno-nursing <5> Meso-nursing

Ex Output:
1


Ex Input:
Question: We want to compare the means of two populations that follow normal distributions and have the same variance. We take two samples of size n1 and n2. When constructing a confidence interval we will have to calculate a value t for a Student's T distribution with: 
 Options:  <1> 2 degrees of freedom. <2> n1 + n2 - 2 degrees of freedom. <3> (n1 + n2) - 1 degrees of freedom. <4> (n1 x n2) / 2 degrees of freedom. <5> Degrees of freedom calculated with the formula of Welch or Smith-Satterwhite.

Ex Output:
2


Ex Input:
Question: The active center of an enzyme: 
 Options:  <1> It is formed by functional groups that come from the central amino acid sequence of the enzyme. <2> It constitutes a large part of the total volume of the enzyme. <3> Increases the ΔG of a reaction, increasing the speed of it. <4> It has a high amount of water molecules together with amino acids. <5> It is the region that joins the substrates and contains the waste that participates in the formation and breaking of links.

Ex Output:

5