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: The proportion of environmental variance due to the influences that a person receives from their family environment and that are shared by the rest of their family: 
 Options:  <1> It is the specific variance. <2> It is called genotypic variance. <3> It matches the heritability. <4> It is dismissed in the investigations. <5> It is the variance coming from the shared environment.

Output: 5


Input: Consider Input: Question: To detect the occurrence of prerenal acute renal failure in a patient, the nurse should monitor the presence of: 
 Options:  <1> Signs of low cardiac output. <2> Hematuria <3> Urine cloudy and smelly. <4> Colic pain <5> Elevation of creatinine clearance.

Output: 1


Input: Consider Input: Question: A study is conducted to evaluate the relationship between lung cancer and exposure to silica. 400 patients diagnosed with lung cancer are selected from the provincial tumor registry and 400 healthy people are chosen randomly from the population resident in the province. The result of the evaluation of this relationship is OR = 1.67; 95% CI = 1.27 - 2.21. It is true: 
 Options:  <1> There is no relationship between exposure to silica and lung cancer. <2> With this study, the relationship between silica and lung cancer can not be evaluated. <3> It is a randomized experimental study with a positive association between exposure to silica and lung cancer. <4> These data show that there is no statistical significance between exposure to silica and lung cancer. <5> It is a case-control study with a positive association between exposure to silica and lung cancer.


Output: 5