Task: Text Categorization
Input (English): Question: The ARP2 / 3 complex: 
 Options:  <0> It is an intermediate filament nucleator agent. <1> It is located in the centrosome. <2> It is responsible for the branching of the actin filaments. <3> It is part of the nuclear sheet. <4> Involved in the formation of transport vesicles.
Output (English): biology