CREATE TABLE "world_war_ii" (
  "estimate" text,
  "name" text,
  "nat" text,
  "ship_type" text,
  "where_sunk" text,
  "date" text
);

Question: What is the date that a hell ship sunk in the East China Sea?
SQL: SELECT "date" FROM "world_war_ii" WHERE "where_sunk"='east china sea' AND "ship_type"='hell ship';

Question: Which nation had a battlecruiser with an estimate of 513?
SQL: SELECT "nat" FROM "world_war_ii" WHERE "ship_type"='battlecruiser' AND "estimate"='513';

Question: What is the date that a ship sank in the South Atlantic?
SQL: SELECT "date" FROM "world_war_ii" WHERE "where_sunk"='south atlantic';

Question: What type of ship was the Shinano?
SQL: SELECT "ship_type" FROM "world_war_ii" WHERE "name"='shinano';

Question: What nation had a ship named Roma?
SQL: SELECT "nat" FROM "world_war_ii" WHERE "name"='roma';