<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 the main theme of the novel "To Kill a Mockingbird" by Harper Lee? Context: The main theme of "To Kill a Mockingbird" by Harper Lee is racial injustice and moral growth. Answer: [/INST]The main theme of the novel is racial injustice and moral growth.</s>