Task: Question Answering
Input (English): Question: Pyruvate dehydrogenase: 
 Options:  <1> Catalyzes an oxidative decarboxylation. <2> It is a monomeric enzyme of low molecular mass. <3> It is located in the cytoplasm. <4> Catalyzes the production of ethanol. <5> Consume ATP.
Output (English): 1