sentence2_structure: Gluconeogenesis<>is<>the synthesis of glucose from pyruvate, lactate and glycerol
sentence1: Gluconeogenesis synthesizes glucose from pyruvate, and glycolysis converts glucose into pyruvate.
sentence2: Gluconeogenesis is the synthesis of glucose from pyruvate, lactate and glycerol.
question: What process is the synthesis of glucose from pyruvate, lactate and glycerol?