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'.

Example Input: Question: Indinavir is a selective inhibitor of HIV protease because: 
 Options:  <1> By hydrolysis, the active drug is generated. <2> Rents irreversibly the active center of the enzyme. <3> Its structure mimics the transition state of the reaction catalyzed by the enzyme. <4> It is a suicide inhibitor. <5> Its symmetric structure interacts effectively with the active center of the enzyme.
Example Output: 3

Example Input: Question: A 69-year-old woman consulted for hemoptotic expectoration. In the two previous months she had low-grade fever, asthenia, anorexia and unquantified weight loss. In the cytological analysis of sputum, hemosiderophages were observed and in the chest radiograph bilateral alveolar infiltrates were observed. Analytically it stood out: Hb 8.2gr / dL, PO2: 58mmHg, creatinine: 5mg / dL, urine: proteinuria +++ microhematuria, cylinders, hematics. ANCAp (antibodies against the cytoplasm of perinuclear neutrophils): positive: anti-glomerular basement membrane antibodies: negative. Antinuclear antibodies: negative. The most likely diagnosis would be: 
 Options:  <1> Idiopathic pulmonary hemosiderosis. <2> Goodpasture syndrome. <3> Systemic lupus erythematosus with severe renal involvement. <4> Classical polyarteritis nodosa. <5> Microscopic polyarteritis.
Example Output: 5

Example Input: Question: In the Pap test, cytological samples should be collected from: 
 Options:  <1> The vulva, the cervix and the inside of the uterine cavity. <2> The vaginal walls and the uterine fundus. <3> The inside of the cervix, the external cervical os and the posterior vaginal sac. <4> The vaginal introitus and the ectocervix. <5> The endocervix and the lateral vaginal sacs.
Example Output:
3