What is an example of Graphiti with Neo4J

from graphiti_core import Graphiti

from graphiti_core.nodes import EpisodeType

# Initialize Graphiti (connects to Neo4j)

graphiti = Graphiti("neo4j://localhost:7687", "neo4j", "password")

async def ingest_document(text: str, source: str):

    """Ingest into knowledge graph"""

    # Graphiti automatically extracts entities and relationships

    await graphiti.add_episode(

        name=source,

        episode_body=text,

        source=EpisodeType.text,

        source_description=f"Document: {source}"

    )

async def search_knowledge_graph(query: str) -> str:

    """Hybrid search: semantic + keyword + graph"""

    # Graphiti combines:

    # - Semantic similarity (embeddings)

    # - BM25 keyword search

    # - Graph structure traversal

    # - Temporal context

  

    results = await graphiti.search(query=query, num_results=5)

  

    # Format graph results

    formatted = []

    for result in results:

        formatted.append(

            f"Entity: {result.node.name}\n"

            f"Type: {result.node.type}\n"

            f"Relationships: {result.relationships}"

        )

  

    return "\n---\n".join(formatted)