CREATE TABLE "list_of_subsidiaries" (
  "date" text,
  "company" text,
  "business" text,
  "country" text,
  "value_usd" text
);

Question: In New Zealand, what's the value that has an unknown date and is an energy business?
SQL: SELECT "value_usd" FROM "list_of_subsidiaries" WHERE "date"='unknown' AND "business"='energy' AND "country"='new zealand';

Question: What company has an unknown date and is an energy business?
SQL: SELECT "company" FROM "list_of_subsidiaries" WHERE "business"='energy' AND "date"='unknown';

Question: In the United Kingdom, what company has an unknown date and is an energy business?
SQL: SELECT "company" FROM "list_of_subsidiaries" WHERE "business"='energy' AND "date"='unknown' AND "country"='united kingdom';

Question: For the United Kingdom, what's the date?
SQL: SELECT "date" FROM "list_of_subsidiaries" WHERE "country"='united kingdom';

Question: For the Enernoc Australia Pty Ltd, what's the country with an unknown date?
SQL: SELECT "country" FROM "list_of_subsidiaries" WHERE "date"='unknown' AND "company"='enernoc australia pty ltd';