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: The standard free energy of activation of a reaction is: 
 Options:  <1> The difference in free energy between the basal state of the products and the substrates. <2> The difference of the enthalpy minus the entropy of the system. <3> The basal energy of the substrates in a catalyzed reaction. <4> The additional free energy that molecules must reach to reach the state of transition. <5> The energy released from a catalysed reaction.

Ex Output:
4


Ex Input:
Question: The anterior pituitary gland: 
 Options:  <1> It is part of the hypothalamus. <2> It is regulated hormonally. <3> It communicates with the neurohypophysis. <4> It releases ADH and oxytocin. <5> It is formed by neurons.

Ex Output:
2


Ex Input:
Question: The document that sets out the principles of Bioethics regarding the autonomy of people, beneficence and justice, and sets the basic requirements of informed consent, the assessment of risks and benefits and the selection of subjects is: 
 Options:  <1> The Declaration of Helsinki of 1964. <2> The Belmont Report of 1978. <3> The principles of the Biomedical Ethics of 1979. <4> The Oviedo Convention of 1997. <5> The Code of Ethics.

Ex Output:

2