Table: poirot_collection
Columns: release_title
series
no_of_dvds
no_of_blu_ray_discs
release_date
episode_no
region_no
released_by

Question: WHAT SERIES WAS RELEASED BY ITV STUDIOS AND A RELEASE DATE OF AUGUST 15, 2012?
SQL: SELECT "series" FROM poirot_collection WHERE "released_by" = 'itv studios' AND "release_date" = 'august 15, 2012'

Question: WHAT IS THE EPISODE NUMBER  THAT HAS 28 DVD?
SQL: SELECT "episode_no" FROM poirot_collection WHERE "no_of_dvds" = '28'

Question: WHAT EPISODE HAS A REGION NUMBER BIGGER THAN 1, AND 32 DVDS?
SQL: SELECT "episode_no" FROM poirot_collection WHERE "region_no" > 1 AND "no_of_dvds" = '32'