What type of disaster is rms atlantic categorized in that was located in Nova Scotia?
CREATE TABLE "200_or_more_deaths" (
  "disaster" text,
  "type" text,
  "location" text,
  "deaths" text,
  "date" text
);
SELECT "type" FROM "200_or_more_deaths" WHERE "location"='nova scotia' AND "disaster"='rms atlantic';