Table: championship_race
Columns: driver
entrant
constructor
time_retired
grid

Question: What constructor has a grid less than 21, and time/retired of engine?
SQL: SELECT "constructor" FROM championship_race WHERE "grid" < 21 AND "time_retired" = 'engine'

Question: When the entrant is fred saunders what is the driver?
SQL: SELECT "driver" FROM championship_race WHERE "entrant" = 'fred saunders'

Question: What's the lowest grid with and entrant of fred saunders?
SQL: SELECT MIN("grid") FROM championship_race WHERE "entrant" = 'fred saunders'

Question: What is the time/retired for the driver emerson fittipaldi?
SQL: SELECT "time_retired" FROM championship_race WHERE "driver" = 'emerson fittipaldi'