CREATE TABLE "fleet" (
  "type" text,
  "owns" text,
  "length" text,
  "delivery_date" text,
  "gross_tonnage" real
);

Question: with delivery date of 2001 2001 what is the owns?
SQL: SELECT "owns" FROM "fleet" WHERE "delivery_date"='2001 2001';

Question: with delivery date of 2001 2001 what is gross tonnage?
SQL: SELECT AVG("gross_tonnage") FROM "fleet" WHERE "delivery_date"='2001 2001';

Question: with delivery date 1997 1997 what is the owns?
SQL: SELECT "owns" FROM "fleet" WHERE "delivery_date"='1997 1997';