CREATE TABLE "h_class" (
  "ship" text,
  "pennant_number" text,
  "laid_down" text,
  "launched" text,
  "completed" text
);

Question: What is the Laid down for the Hyperion ship?
SQL: SELECT "laid_down" FROM "h_class" WHERE "ship"='hyperion';

Question: What is the name of the ship that had a Pennant number of h55?
SQL: SELECT "ship" FROM "h_class" WHERE "pennant_number"='h55';