why does Llama generate random questions and answer them by itself, it's so annoying and overcomplicates stuff. I'm using Langchain framework and my prompt template code looks something like this:

system_prompt = (
"Use the given context to answer the question. "
"If you don't know the answer, say you don't know. "
"Use three sentence maximum and keep the answer concise. "
"Context: {context}"
)
prompt = ChatPromptTemplate.from_messages(
[
("system", system_prompt),
("human", "{input}"),
]
)

def get_response_llm_pinecone(llm, vectorstore, query):

Create the question-answer chain

question_answer_chain = create_stuff_documents_chain(llm, prompt)

# Create the retrieval chain
chain = create_retrieval_chain(vectorstore.as_retriever(), question_answer_chain)

# Invoke the retrieval chain with the query
response = chain.invoke({"input": query})
print(response["input"])
print(response["answer"])