<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 is Quantum Mechanics? Context: Quantum Mechanics describes nature at the smallest scales of energy levels of atoms and subatomic particles. Answer: [/INST]Quantum Mechanics is a fundamental theory in physics that describes nature at the smallest scales of energy levels of atoms and subatomic particles.</s>