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: Sodium metal reacts violently with water because Na: 
 Options:  <1> Oxidize the water to oxygen, and the reaction is very exothermic. <2> It reduces the water to hydrogen, and the reaction is very exothermic. <3> Oxidizes the water to oxygen, and when a gas is generated, the entropy increases enormously. <4> It reduces the water to hydrogen, and the reaction is very endothermic. <5> It combines with water giving rise to an explosive hydride.

Output: 2


Input: Consider Input: Question: The conception of person based on the idea that he is a being inseparably linked to his culture is developed in the care model of: 
 Options:  <1> M. E. Rogers. <2> N. J. Pender. <3> J. Watson. <4> M. Leininger. <5> M. K. Chisman and J. Riehl-Sisca.

Output: 4


Input: Consider Input: Question: When a person remains in an immobile attitude, with rigid muscles, and can be placed in different positions without him trying to recover the original position for a while, he is likely to suffer: 
 Options:  <1> Passive negativity <2> Automatic obedience. <3> Reactive mannerisms. <4> Psychomotor alteration of rest. <5> Waxy flexibility.


Output: 5