What is the sum of staterooms in with a year buit of 2008, and a crew less than 28?
CREATE TABLE "ships_cruising_in_asia" (
  "ship_name" text,
  "year_built" real,
  "length" text,
  "crew" real,
  "guests" real,
  "staterooms" real,
  "comments" text
);
SELECT SUM("staterooms") FROM "ships_cruising_in_asia" WHERE "year_built"=2008 AND "crew"<28;