Table: race_results_43
Columns: event
circuit
gt3_pro_cup_winner
gt3_pro_am_cup_winner
gt3_citation_cup_winner
gt4_cup_winner

Question: List all GT4 Cup winners played on the Spa-Francorchamps Report.
SQL: SELECT "gt4_cup_winner" FROM race_results_43 WHERE "circuit" = 'Spa-Francorchamps Report'

Question: Who are the gt3 pro / am cup winners when the gt3 pro cup winner was no. 1 vita4one?
SQL: SELECT "gt3_pro_am_cup_winner" FROM race_results_43 WHERE "gt3_pro_cup_winner" = 'No. 1 Vita4One'

Question: What is the highest numbered event?
SQL: SELECT MAX("event") FROM race_results_43