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: In the determination of water hardness due to the presence of Ca2 + and Mg2 + ions, the titrant reagent is used: 
 Options:  <1> Methyl orange. <2> A standard solution of potassium chloride. <3> Black Eriochrome T. <4> A standard solution of ethylenediaminetetraacetic acid (EDTA). <5> A solution of AEDT previously standardized against a solution of potassium phthalate.

Ex Output:
4


Ex Input:
Question: It is NOT a component of the evaluation stage of the Nursing Process: 
 Options:  <1> The collection of data related to the results. <2> The comparison of the data with the desired results. <3> The relationship of the nursing activities with the results. <4> The continuation, modification or termination of the care plan. <5> The election of pertinent results and determination of precise indicators.

Ex Output:
5


Ex Input:
Question: What is the approach proposed by the relationship model between therapist and client as expert to expert ?: 
 Options:  <1> The behavioral model. <2> The constructivist perspective <3> The psychoanalysis. <4> The strategic school. <5> The therapy centered on the client.

Ex Output:

2