CREATE TABLE table_53121 ("City district" TEXT, "Area km\\u00b2" TEXT, "Population 2007 census ( hab ) " TEXT, "Housing  ( 2007 ) " TEXT, "Density  ( hab/km\\u00b2 ) " TEXT, "Elevation msl" TEXT)

What is the elevation of the city with a number of 91,385 Housing dwellings in 2007?
SELECT "Elevation msl" FROM table_53121 WHERE "Housing (2007)" = '91,385'
SELECT "Elevation msl" FROM "table_53121" WHERE "Housing (2007)" = '91,385'