How much tonnage Tonnage (GRT) has a Nationality of united kingdom, and a Date of 27 june 1941?
CREATE TABLE "raiding_history" (
  "date" text,
  "name" text,
  "nationality" text,
  "tonnage_grt" real,
  "fate" text
);
SELECT COUNT("tonnage_grt") FROM "raiding_history" WHERE "nationality"='united kingdom' AND "date"='27 june 1941';