text: database.from langchain.agents import create_sql_agentfrom langchain.agents.agent_toolkits import SQLDatabaseToolkittoolkit = SQLDatabaseToolkit(db=db, llm=llm)agent = create_sql_agent(llm=llm, toolkit=toolkit, verbose=True)agent.run("What is the longest trip distance and how long did it take?")            > Entering new AgentExecutor chain...    Action: list_tables_sql_db    Action Input:     Observation: trips    Thought:I should check the schema of the trips table to see if it has the necessary columns for trip distance and duration.    Action: schema_sql_db    Action Input: trips    Observation:     CREATE TABLE trips (        tpep_pickup_datetime TIMESTAMP,         tpep_dropoff_datetime TIMESTAMP,         trip_distance FLOAT,         fare_amount FLOAT,         pickup_zip INT,         dropoff_zip INT    ) USING DELTA        /*    3 rows from trips table:    tpep_pickup_datetime    tpep_dropoff_datetime   trip_distance   fare_amount pickup_zip  dropoff_zip    2016-02-14 16:52:13+00:00   2016-02-14 17:16:04+00:00   4.94    19.0    10282   10171    2016-02-04 18:44:19+00:00   2016-02-04