CREATE TABLE "opinion_polls" (
  "source" text,
  "date" text,
  "gerb" text,
  "attack" text,
  "blue_coalition" text
);

Question: On what Date is the Blue Coalition 8,80%?
SQL: SELECT "date" FROM "opinion_polls" WHERE "blue_coalition"='8,80%';

Question: What Source has an Attack of 9,77%?
SQL: SELECT "source" FROM "opinion_polls" WHERE "attack"='9,77%';

Question: What Attack has a Source of NCIOM?
SQL: SELECT "attack" FROM "opinion_polls" WHERE "source"='nciom';

Question: What Attack has a 30,00% GERB?
SQL: SELECT "attack" FROM "opinion_polls" WHERE "gerb"='30,00%';

Question: What GERB has an 11% Attack?
SQL: SELECT "gerb" FROM "opinion_polls" WHERE "attack"='11%';