CREATE TABLE table_53123 ("City district" CLOB, "Area km\\u00b2" CLOB, "Population 2007 census ( hab ) " CLOB, "Housing  ( 2007 ) " CLOB, "Density  ( hab/km\\u00b2 ) " CLOB, "Elevation msl" CLOB)

What is the density of the city with an elevation of 3,400 msl?
SELECT "Density (hab/km\u00b2)" FROM table_53123 WHERE "Elevation msl" = '3,400 msl'
SELECT "Density (hab/km\u00b2)" FROM "table_53123" WHERE "Elevation msl" = '3,400 msl'