Task: Question Answering
Input (English): Question: The Cori cycle: 
 Options:  <1> It involves the synthesis and degradation of glycogen. <2> It does not imply the conversion of lactate into pyruvate. <3> It only takes place in the liver. <4> Oxidizes tricarboxylic acids. <5> It involves glycolysis and gluconeogenesis.
Output (English): 5