What ride opened after 2011?
CREATE TABLE "current_roller_coasters" (
  "current_name" text,
  "year_first_opened" real,
  "manufacturer" text,
  "location_in_park" text,
  "thrill_intensity_rating" text,
  "minimum_height_requirements" text
);
SELECT "current_name" FROM "current_roller_coasters" WHERE "year_first_opened">2011;