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: 50-year-old man, mechanic, consulted for a two-year evolution of difficulty in handling the right hand and a feeling of stiffness in the arm. His wife notices his expressionless face and reports that he has very vivid nightmares that wake him up agitated. During the examination, rigidity was observed in the right limbs and slow walking without right arm. What is the most likely diagnosis? 
 Options:  <1> Left thalamic lacunar infarct. <2> Amyotrophic Lateral Sclerosis. <3> Parkinson's disease <4> Cervical plexopathy <5> Corticobasal degeneration.
Example Output: 3

Example Input: Question: Which of the following situations would noticeably decrease the transcription of a gene? 
 Options:  <1> The presence of a repressor and an inducing molecule. <2> The binding of RNA polymerase to DNA. <3> The presence of a repressor and a correpressor molecule. <4> The presence of an activator and its signal molecule. <5> The presence of a mutated repressor that could not bind to DNA.
Example Output: 3

Example Input: Question: In relation to the structure of the genomes, the introns: 
 Options:  <1> They frequently occur in prokaryotic genomes. <2> There may be several in the same gene. <3> They encode rare amino acids in proteins. <4> They are transcribed and translated. <5> They have a high content in G: C pairs.
Example Output:
2