Which commission was launched 28 june 1934, and has a Pennant number of h.78?
CREATE TABLE "f_class" (
  "ship" text,
  "pennant_number" text,
  "laid_down" text,
  "launched" text,
  "commissioned" text
);
SELECT "commissioned" FROM "f_class" WHERE "launched"='28 june 1934' AND "pennant_number"='h.78';