What is the density of the city with an elevation of 3,400 msl?
CREATE TABLE table_53123 (
    "City district" text,
    "Area km\u00b2" text,
    "Population 2007 census(hab)" text,
    "Housing (2007)" text,
    "Density (hab/km\u00b2)" text,
    "Elevation msl" text
)
SELECT "Density (hab/km\u00b2)" FROM table_53123 WHERE "Elevation msl" = '3,400 msl'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the density of the city with an elevation of 3,400 msl? ### Input: CREATE TABLE table_53123 (
    "City district" text,
    "Area km\u00b2" text,
    "Population 2007 census(hab)" text,
    "Housing (2007)" text,
    "Density (hab/km\u00b2)" text,
    "Elevation msl" text
) ### Response: SELECT "Density (hab/km\u00b2)" FROM table_53123 WHERE "Elevation msl" = '3,400 msl'