Table: ontario_election_2011
Columns: polling_firm
date_of_polling
link
liberal
green

Question: What is the link for january 31 – february 3, 2011?
SQL: SELECT "link" FROM ontario_election_2011 WHERE "date_of_polling" = 'january 31 – february 3, 2011'

Question: On what date of polling was the Polling Firm forum research with 7 green and less than 30 liberals?
SQL: SELECT "date_of_polling" FROM ontario_election_2011 WHERE "polling_firm" = 'forum research' AND "green" = 7 AND "liberal" < 30

Question: Which september 26–28, 2011 polling firm had a Link of html, less than 36 liberals,  and less than 8 green?
SQL: SELECT "polling_firm" FROM ontario_election_2011 WHERE "link" = 'html' AND "liberal" < 36 AND "green" < 8 AND "date_of_polling" = 'september 26–28, 2011'

Question: What june 21–22, 2011 polling has green smaller than 13?
SQL: SELECT "polling_firm" FROM ontario_election_2011 WHERE "green" < 13 AND "date_of_polling" = 'june 21–22, 2011'