<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What does the Schrodinger equation describe? Context: The Schrodinger equation describes the evolution of a quantum system over time. Answer: [/INST]The Schrodinger equation describes how the quantum state of a physical system changes over time.</s>