Task: Text Categorization
Input (English): Question: Sodium metal reacts violently with water because Na: 
 Options:  <0> Oxidize the water to oxygen, and the reaction is very exothermic. <1> It reduces the water to hydrogen, and the reaction is very exothermic. <2> Oxidizes the water to oxygen, and when a gas is generated, the entropy increases enormously. <3> It reduces the water to hydrogen, and the reaction is very endothermic. <4> It combines with water giving rise to an explosive hydride.
Output (English): chemistry