text: PRIMARY KEY ("PlaylistId", "TrackId"),         FOREIGN KEY("TrackId") REFERENCES "Track" ("TrackId"),         FOREIGN KEY("PlaylistId") REFERENCES "Playlist" ("PlaylistId")    )        SELECT * FROM 'PlaylistTrack' LIMIT 3;    PlaylistId TrackId    1 3402    1 3389    1 3390    Thought: I now know the final answer    Final Answer: The PlaylistTrack table contains two columns, PlaylistId and TrackId, which are both integers and are used to link Playlist and Track tables.        > Finished chain.    'The PlaylistTrack table contains two columns, PlaylistId and TrackId, which are both integers and are used to link Playlist and Track tables.'Example: running queriesâ€‹agent_executor.run(    "List the total sales per country. Which country's customers spent the most?")            > Entering new AgentExecutor chain...    Action: list_tables_sql_db    Action Input: ""    Observation: Invoice, MediaType, Artist, InvoiceLine, Genre, Playlist, Employee, Album, PlaylistTrack, Track, Customer    Thought: I should look at the schema of the relevant tables to see what columns I can use.    Action: schema_sql_db    Action Input: "Invoice, Customer"    Observation:     CREATE TABLE "Customer" (        "CustomerId" INTEGER NOT NULL,         "FirstName" NVARCHAR(40) NOT NULL,         "LastName" NVARCHAR(20) NOT