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 general, water intake should be increased in patients undergoing chemotherapy with the aim of: 
 Options:  <1> Prevent kidney damage. <2> Fluidify bronchial secretions. <3> Relieve post-chemotherapy nausea. <4> Increase the volume. <5> Decrease the risk of infection.

Ex Output:
1


Ex Input:
Question: Among the epidemiological criteria of causality defined by Bradford Hill (1965) is NOT: 
 Options:  <1> Strength of association. <2> Temporal sequence. <3> Biological gradient <4> Cessation or reversibility effect. <5> Presence of alternative explanations.

Ex Output:
5


Ex Input:
Question: Indicate which of the following disorders will cause jaundice: 
 Options:  <1> Gilbert's syndrome. <2> Zellweger syndrome. <3> Hashimoto's thyroiditis. <4> Cushing's disease <5> Alcaptonuria.

Ex Output:

1