CREATE TABLE "116_seats_needed_for_a_majority" (
  "date_released" text,
  "polling_institute" text,
  "social_democratic" text,
  "socialist" text,
  "green_communist" text,
  "democratic_and_social_centre" text,
  "lead" text
);

Question: What's the date released when there was 9.7% of Green communist?
SQL: SELECT "date_released" FROM "116_seats_needed_for_a_majority" WHERE "green_communist"='9.7%';

Question: What's the green communist when Euroteste/JN is the polling Institute?
SQL: SELECT "green_communist" FROM "116_seats_needed_for_a_majority" WHERE "polling_institute"='euroteste/jn';