CREATE TABLE "1823_1826_orders" (
  "name" text,
  "built_by_hm_dockyard" text,
  "ordered" text,
  "laid_down" text,
  "launched" text
);

Question: Which built by HM Dockyard has September 1830 as the laid down?
SQL: SELECT "built_by_hm_dockyard" FROM "1823_1826_orders" WHERE "laid_down"='september 1830';

Question: What is the name that has July 1823 as the Laid down, and portsmouth as the built by hm dockyard?
SQL: SELECT "name" FROM "1823_1826_orders" WHERE "laid_down"='july 1823' AND "built_by_hm_dockyard"='portsmouth';

Question: What ordered has helena as the name?
SQL: SELECT "ordered" FROM "1823_1826_orders" WHERE "name"='helena';

Question: What ordered has algerine (2nd of name) as the name?
SQL: SELECT "ordered" FROM "1823_1826_orders" WHERE "name"='algerine (2nd of name)';

Question: What name has pembroke as the built by hm dockyard, and may 1825 as the laid down?
SQL: SELECT "name" FROM "1823_1826_orders" WHERE "built_by_hm_dockyard"='pembroke' AND "laid_down"='may 1825';