To set it up follow the instructions on https://database.guide/2-sample-databases-sqlite/, placing the .db file in a notebooks folder at the root of this repository.from langchain.chains import LLMMathChainfrom langchain.llms import OpenAIfrom langchain.utilities import SerpAPIWrapperfrom langchain.utilities import SQLDatabasefrom langchain_experimental.sql import SQLDatabaseChainfrom langchain.agents import initialize_agent, Toolfrom langchain.agents import AgentTypellm = OpenAI(temperature=0)search = SerpAPIWrapper()llm_math_chain = LLMMathChain(llm=llm, verbose=True)db = SQLDatabase.from_uri("sqlite:///../../../../../notebooks/Chinook.db")db_chain = SQLDatabaseChain.from_llm(llm, db, verbose=True)tools = [    Tool(        name="Search",        func=search.run,        description="useful for when you need to answer questions about current events. You should ask targeted questions"    ),    Tool(        name="Calculator",        func=llm_math_chain.run,        description="useful for when you need to answer questions about math"    ),    Tool(        name="FooBar DB",        func=db_chain.run,        description="useful for when you need to answer questions about FooBar. Input should be in the form of a question containing full context"    )]mrkl = initialize_agent(tools, llm, agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION, verbose=True)mrkl.run("Who is Leo DiCaprio's girlfriend? What is her current age raised to the 0.43 power?")    > Entering new AgentExecutor chain...     I need to find out who Leo DiCaprio's girlfriend is and then calculate her age raised to the 0.43 power.    Action: Search    Action Input: "Who is Leo DiCaprio's girlfriend?"    Observation: DiCaprio met actor Camila Morrone in December 2017, when she was 20 and he was 43. They were spotted at Coachella and went on multiple vacations together. Some reports suggested that DiCaprio was ready to ask Morrone to marry him. The couple made their red carpet debut at the 2020 Academy Awards.    Thought:
This walkthrough demonstrates how to replicate the MRKL system using agents.
This walkthrough demonstrates how to replicate the MRKL system using agents. ->: To set it up follow the instructions on https://database.guide/2-sample-databases-sqlite/, placing the .db file in a notebooks folder at the root of this repository.from langchain.chains import LLMMathChainfrom langchain.llms import OpenAIfrom langchain.utilities import SerpAPIWrapperfrom langchain.utilities import SQLDatabasefrom langchain_experimental.sql import SQLDatabaseChainfrom langchain.agents import initialize_agent, Toolfrom langchain.agents import AgentTypellm = OpenAI(temperature=0)search = SerpAPIWrapper()llm_math_chain = LLMMathChain(llm=llm, verbose=True)db = SQLDatabase.from_uri("sqlite:///../../../../../notebooks/Chinook.db")db_chain = SQLDatabaseChain.from_llm(llm, db, verbose=True)tools = [    Tool(        name="Search",        func=search.run,        description="useful for when you need to answer questions about current events. You should ask targeted questions"    ),    Tool(        name="Calculator",        func=llm_math_chain.run,        description="useful for when you need to answer questions about math"    ),    Tool(        name="FooBar DB",        func=db_chain.run,        description="useful for when you need to answer questions about FooBar. Input should be in the form of a question containing full context"    )]mrkl = initialize_agent(tools, llm, agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION, verbose=True)mrkl.run("Who is Leo DiCaprio's girlfriend? What is her current age raised to the 0.43 power?")    > Entering new AgentExecutor chain...     I need to find out who Leo DiCaprio's girlfriend is and then calculate her age raised to the 0.43 power.    Action: Search    Action Input: "Who is Leo DiCaprio's girlfriend?"    Observation: DiCaprio met actor Camila Morrone in December 2017, when she was 20 and he was 43. They were spotted at Coachella and went on multiple vacations together. Some reports suggested that DiCaprio was ready to ask Morrone to marry him. The couple made their red carpet debut at the 2020 Academy Awards.    Thought: