<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 is a fundamental theory in physics describing the physical properties of nature at the atomic and subatomic scale. Answer: [/INST]Quantum Mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.</s>