Task: Text Categorization
Input (English): Question: How many macromolecular complexes form the electronic transport chain ?: 
 Options:  <0> 6 macromolecular complexes. <1> 5 macromolecular complexes. <2> 4 macromolecular complexes. <3> 3 macromolecular complexes. <4> 2 macromolecular complexes.
Output (English): pharmacology