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 is the mechanism of action of the immunosuppressant drug everolimus ?: 
 Options:  <1> Inhibition of the activation of lymphocytes as membrane receptors. <2> Inhibition of the transmission of the activation signals. <3> Inhibition of nucleotide synthesis. <4> Inhibition of lymphocyte migration. <5> Inhibition of proliferation signals.

Ex Output:
5


Ex Input:
Question: Of the following reaction mechanisms, in which there is an inversion of the configuration from the reactant to the product of the reaction ?: 
 Options:  <1> Bimolecular nucleophilic substitution (SN2). <2> Unimolecular elimination (E1). <3> Unimolecular nucleophilic substitution (SN1). <4> Addition Markovnikov. <5> Addition anti-Markovnikov.

Ex Output:
1


Ex Input:
Question: What would happen if the DNA carried OH in carbon 2 'of the pentose? 
 Options:  <1> That instead of thymine should carry uracil. <2> That would be more sensitive to hydrolysis. <3> That instead of in the nucleus it would be in the cytoplasm. <4> That it could not form double helices. <5> That would give a higher absorbance value at 260 mm.

Ex Output:

2