Table: racing_results_5
Columns: year
team
co_drivers
class
laps
pos
class_pos

Question: Which Team has a Year smaller than 2007, and a Class of gts?
SQL: SELECT "team" FROM racing_results_5 WHERE "year" < 2007 AND "class" = 'gts'

Question: In what year Year has a Co-Drivers of jérôme policand christopher campbell?
SQL: SELECT SUM("year") FROM racing_results_5 WHERE "co_drivers" = 'jérôme policand christopher campbell'