CREATE TABLE "references" (
  "play" text,
  "author" text,
  "company" text,
  "base" text,
  "country" text
);

Question: what is the play when the company is national theatre of greece?
SQL: SELECT "play" FROM "references" WHERE "company"='national theatre of greece';

Question: what is the company when the country is greece and the author is aeschylus?
SQL: SELECT "company" FROM "references" WHERE "country"='greece' AND "author"='aeschylus';

Question: what is the country when the base is ljubljana?
SQL: SELECT "country" FROM "references" WHERE "base"='ljubljana';

Question: what is the base when the play is thesmophoriazusae?
SQL: SELECT "base" FROM "references" WHERE "play"='thesmophoriazusae';

Question: what is the company when the base is ljubljana?
SQL: SELECT "company" FROM "references" WHERE "base"='ljubljana';

Question: what is the play when the company is cyprus theatre organisation?
SQL: SELECT "play" FROM "references" WHERE "company"='cyprus theatre organisation';