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: Isopropyl alcohol is prepared from petroleum by hydration of: 
 Options:  <1> Isobutene <2> Eteno <3> Penteno <4> Buteno. <5> Propene

Output: 5


Input: Consider Input: Question: Acetylsalicylic acid is a compound whose pKa is 3.5. What percentage of a dose of this product can be absorbed in the stomach fasting (pH 1.5)? 
 Options:  <1> Less than 10% <2> Between 10% and 20%. <3> More than 90% <4> Between 20% and 40%. <5> 50%

Output: 3


Input: Consider Input: Question: If a patient claims to hear voices in Paris when he is in London, we say that he suffers: 
 Options:  <1> A hallucination reflects. <2> A paranoid hallucination. <3> An extracampine hallucination. <4> An autoscopic hallucination. <5> A negative hallucination


Output: 3