Chain for question-answering against a graph by generating Cypher statements.
class GraphCypherQAChainBaseChainconst chain = new GraphCypherQAChain({
llm: new ChatOpenAI({ model: "gpt-4o-mini", temperature: 0 }),
graph: new Neo4jGraph(),
});
const res = await chain.invoke("Who played in Pulp Fiction?");