Task: Text Categorization
Input (English): Question: What are the components of a functional heme group ?: 
 Options:  <0> Four molecules of bilirubin and one Fe3 +. <1> Four globins (2alpha + 2beta) and one Fe3 +. <2> One molecule of protoporphyrin and one Fe2 +. <3> One molecule of bilirubin and one Fe2 +. <4> Four globins (2alpha + 2beta) and one Fe2 +.
Output (English): pharmacology