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: What quality criteria must a psychological assessment instrument meet? 
 Options:  <1> Validity, or degree to which the scores of a test are free of measurement error. <2> Reliability, or degree to which the scores of a test are free of measurement error. <3> Have a coefficient of internal consistency above 0.40. <4> To have a low proportion of the variance observed explained by the real variance. <5> Include a high error variance.

Ex Output:
2


Ex Input:
Question: Which of the following enzyme complexes catalyzes the reduction of molecular oxygen to water during oxidative phosphorylation? 
 Options:  <1> ATP synthase. <2> Cytochrome c oxidase. <3> NADH-Q oxide-reductase. <4> Q-cytochrome c-oxide-reductase. <5> Succinate-Q reductase.

Ex Output:
2


Ex Input:
Question: The second quartile is the same as the: 
 Options:  <1> Arithmetic average. <2> Geometric mean. <3> Harmonic half <4> Fashion. <5> Median.

Ex Output:

5