What is the name of the location and ship type in the Gulf of Mexico that entered service in 1999?
CREATE TABLE "ultra_deep_water" (
  "name" text,
  "type" text,
  "entered_service" text,
  "water_depth" text,
  "location" text,
  "customer" text
);
SELECT "name" FROM "ultra_deep_water" WHERE "location"='gulf of mexico' AND "type"='ship' AND "entered_service"='1999';