Table: pescarolo_results
Columns: year
team
co_drivers
class
pos
class_pos

Question: Which class has a Class Position of 6th?
SQL: SELECT "class" FROM pescarolo_results WHERE "class_pos" = '6th'

Question: Which class has a Year of 1968?
SQL: SELECT "class" FROM pescarolo_results WHERE "year" = 1968

Question: Which class has a Team of kouros racing team?
SQL: SELECT "class" FROM pescarolo_results WHERE "team" = 'kouros racing team'