Table: speedway_grand_prix_results
Columns: round
date
city_and_venue
winner
runner_up
3rd_placed
4th_placed
results

Question: Who placed fourth when the winner was Greg Hancock?
SQL: SELECT "4th_placed" FROM speedway_grand_prix_results WHERE "winner" = 'Greg Hancock'

Question: Who was the runner-up on September 11?
SQL: SELECT "runner_up" FROM speedway_grand_prix_results WHERE "date" = 'September 11'

Question: How many rounds were on July 10?
SQL: SELECT COUNT("round") FROM speedway_grand_prix_results WHERE "date" = 'July 10'