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: Which of the following characteristics defines an endogenous depression? 
 Options:  <1> Its course is continuous. <2> There is an evening worsening. <3> There is an early awakening. <4> There is a good response to placebo. <5> A neurotic personality intervenes in the etiopathogenesis.

Ex Output:
3


Ex Input:
Question: After the reaction of some xenobiotics with glutathione, the final product is formed: 
 Options:  <1> Sulfanil urea. <2> Reduced glutathione <3> Oxidized glutathione. <4> Thiosulfate. <5> Mercapturic acid.

Ex Output:
5


Ex Input:
Question: The reaction of Diels Alder is an example of reaction: 
 Options:  <1> Concerted and stereospecific. <2> Nucleophilic substitution of order 2. <3> Nucleophilic substitution of order 1. <4> Condensation polymerization. <5> Nucleophilic addition.

Ex Output:

1