Table: indy_1992_race
Columns: race_name
circuit
city_location
date
pole_position
fastest_lap
winning_driver
winning_team
report

Question: What is the pole position for marlboro challenge?
SQL: SELECT "pole_position" FROM indy_1992_race WHERE "race_name" = 'marlboro challenge'

Question: What circut has an unknown fastest lap on July 19?
SQL: SELECT "circuit" FROM indy_1992_race WHERE "fastest_lap" = 'unknown' AND "date" = 'july 19'

Question: What circuit did marlboro team penske win with an unknown fastest lap?
SQL: SELECT "circuit" FROM indy_1992_race WHERE "winning_team" = 'marlboro team penske' AND "fastest_lap" = 'unknown'

Question: What team does mario andretti play pole position for?
SQL: SELECT "winning_team" FROM indy_1992_race WHERE "pole_position" = 'mario andretti'