CREATE TABLE table_29764 ("Stadium" TEXT, "City" TEXT, "Capacity" FLOAT, "Matches played" FLOAT, "Overall attendance" FLOAT, "Average attendance per match" FLOAT, "Average attendance as % of Capacity" TEXT, "Overall goals scored" FLOAT, "Average goals scored per match" TEXT, "Elevation" TEXT)

what is the elevation for port elizabeth?
SELECT "Elevation" FROM table_29764 WHERE "City" = 'Port Elizabeth'
SELECT "Elevation" FROM "table_29764" WHERE "City" = 'Port Elizabeth'