Ragas faithfulness evaluation

from ragas.metrics import faithfulness

# Query the retriever using the query and extract the document text
query = "How does RAG improve question answering with LLMs?"
retrieved_docs = [doc.____ for doc in retriever.____(____)]

# Define the faithfulness chain
faithfulness_chain = ____(____, llm=llm, embeddings=embeddings)

# Evaluate the faithfulness of the RAG chain
eval_result = ____({
  "question": ____,
  "answer": ____.____(query),
  "contexts": ____
})

print(eval_result)