CREATE TABLE table_27199 ("#" FLOAT, "Episode" CLOB, "Air Date" CLOB, "Timeslot  ( EST ) " CLOB, "Rating" CLOB, "Share" FLOAT, "18-49  ( Rating/Share ) " CLOB, "Viewers  ( m ) " CLOB, "Weekly Rank  ( # ) " CLOB)

On what date does the episode called 'triangles' air
SELECT "Air Date" FROM table_27199 WHERE "Episode" = 'Triangles'
SELECT "Air Date" FROM "table_27199" WHERE "Episode" = 'Triangles'