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: The diagnostic sensitivity of an analytical magnitude for a certain disease is:
Options: <1> 1 / specificity. <2> It depends on the prevalence of the disease. <3> It is the number of patients that give positive results among all possible individuals. <4> It is the quotient between the number of patients who give positive results for this magnitude and the total number of patients considered. <5> It is deducted directly from the minimum detectable value of this magnitude.

Output: 4

Input: Consider Input: Question: A lack of interest in carrying out sexual relations or behavior in general is, more properly:
Options: <1> Sexual aversion <2> Lack of sexual desire or inhibited sexual desire. <3> Impotence or anorgasmia. <4> Excitation disorder. <5> Orgasmic dysfunction

Output: 2

Input: Consider Input: Question: Heparin is:
Options: <1> A plasma protein with no net charge with coagulant function. <2> A glycosaminoglycan with high density of sulphate groups in its structure and anticoagulant function. <3> A protease that facilitates the transformation of prothrombin into thrombin. <4> An extracellular matrix protein with no net charge, which gives rise to highly viscous solutions with a lubricating function. <5> A homopolysaccharide with anticoagulant function thanks to the high density of positive charges in its structure.
Output: 2