"retriever": sou_retriever
    },
    {
        "name": "pg essay", 
        "description": "Good for answer quesitons about Paul Graham's essay on his career", 
        "retriever": pg_retriever
    },
    {
        "name": "personal", 
        "description": "Good for answering questions about me", 
        "retriever": personal_retriever
    }
]
chain = MultiRetrievalQAChain.from_retrievers(OpenAI(), retriever_infos, verbose=True)
print(chain.run("What did the president say about the economy?"))
> Entering new MultiRetrievalQAChain chain...
state of the union: {'query': 'What did the president say about the economy in the 2023 State of the Union address?'}
> Finished chain.
 The president said that the economy was stronger than it had been a year prior, and that the American Rescue Plan helped create record job growth and fuel economic relief for millions of Americans. He also proposed a plan to fight inflation and lower costs for families, including cutting the cost of prescription drugs and energy, providing investments and tax credits for energy efficiency, and increasing access to child care and Pre-K.
print(chain.run("What is something Paul Graham regrets about his work?"))
> Entering new MultiRetrievalQAChain chain...
pg essay: {'query': 'What is something Paul Graham regrets about his work?'}
> Finished chain.
 Paul Graham regrets that he did not take a vacation after selling his company, instead of immediately starting to paint.
print(chain.run("What is my background?"))
> Entering new MultiRetrievalQAChain chain...
personal: {'query': 'What is my background?'}
> Finished chain.
 Your background is Peruvian.
rtdocs_stable/api.python.langchain.com/en/stable/modules/chains/examples/multi_retrieval_qa_router.html