Which september 26–28, 2011 polling firm had a Link of html, less than 36 liberals,  and less than 8 green?
CREATE TABLE "opinion_polls" (
  "polling_firm" text,
  "date_of_polling" text,
  "link" text,
  "liberal" real,
  "green" real
);
SELECT "polling_firm" FROM "opinion_polls" WHERE "link"='html' AND "liberal"<36 AND "green"<8 AND "date_of_polling"='september 26–28, 2011';