Task: Text Categorization
Input (English): Question: The black indicator of Eriochrome T (N.E.T.) has the following colors depending on the pH: 
 Options:  <0> H2In¯rojo, HIn2- blue, In3- orange and when complexed with metal it is red. <1> H2In¯azul, HIn2- red, In3- orange and when complexed with metal it is red. <2> H2In¯rojo, HIn2- blue, In3- red wine and when complexed with metal it is orange. <3> H2In-red, HIn2- orange, In3- blue and when complexed with metal it is orange. <4> H2In¯azul, HIn2- orange, In3- red and when complexed with metal is orange.
Output (English): pharmacology