Table: rally_results_2
Columns: year
team
co_drivers
class
pos
class_pos

Question: Who was the co-driver in the DNF position in the GT1 class?
SQL: SELECT "co_drivers" FROM rally_results_2 WHERE "pos" = 'dnf' AND "class" = 'gt1'

Question: Which co-driver was part of team Martini Lancia earlier than 1986?
SQL: SELECT "co_drivers" FROM rally_results_2 WHERE "year" < 1986 AND "team" = 'martini lancia'

Question: The Le Mans Porsche team Joest Racing is in which class?
SQL: SELECT "class" FROM rally_results_2 WHERE "team" = 'le mans porsche team joest racing'