CREATE TABLE table_203_212 (id NUMBER, "#" NUMBER, "district" CLOB, "land area  ( km2 ) " NUMBER, "population\ ( 2010 census ) " NUMBER, "density  ( persons/km2 ) " NUMBER)

how many districts are large than 50 square kilometers ?
SELECT COUNT("district") FROM table_203_212 WHERE "land area (km2)" > 50
SELECT COUNT("district") FROM "table_203_212" WHERE "land area (km2)" > 50