ทำความเข้าใจ BM25

chunks = [
    "RAG stands for Retrieval Augmented Generation.",
    "Graph Retrieval Augmented Generation uses graphs to store and utilize relationships between documents in the retrieval process.",
    "There are different types of RAG architectures; for example, Graph RAG."
]

# Initialize the BM25 retriever
bm25_retriever = ____.from_texts(____)

# Invoke the retriever
results = bm25_retriever.____("Graph RAG")

# Extract the page content from the first result
print("Most Relevant Document:")
print(____)