Table: curling_teams
Columns: season
skip
third
second
lead

Question: Which season has Zach Jacobson in third?
SQL: SELECT "season" FROM curling_teams WHERE "third" = 'zach jacobson'

Question: Who was the lead with John Shuster as skip in the season of 2009–10?
SQL: SELECT "lead" FROM curling_teams WHERE "skip" = 'john shuster' AND "season" = '2009–10'

Question: Who was second when Shane McKinlay was the lead?
SQL: SELECT "second" FROM curling_teams WHERE "lead" = 'shane mckinlay'

Question: Who was the lead with Pete Fenson as skip and Joe Polo as second in season 2005–06?
SQL: SELECT "lead" FROM curling_teams WHERE "skip" = 'pete fenson' AND "second" = 'joe polo' AND "season" = '2005–06'

Question: Who was the lead with John Shuster as skip, Chris Plys in second, and Jeff Isaacson in third?
SQL: SELECT "lead" FROM curling_teams WHERE "skip" = 'john shuster' AND "third" = 'jeff isaacson' AND "second" = 'chris plys'