Table: race_results_2002_malaysian
Columns: rider
manufacturer
laps
time_retired
grid

Question: Which Manufacturer has a Laps of 21, a Grid larger than 16, and a Rider of akira ryō?
SQL: SELECT "manufacturer" FROM race_results_2002_malaysian WHERE "laps" = 21 AND "grid" > 16 AND "rider" = 'akira ryō'

Question: Which Time/Retired has a Rider of daijiro kato?
SQL: SELECT "time_retired" FROM race_results_2002_malaysian WHERE "rider" = 'daijiro kato'

Question: Which Manufacturer has a Rider of daijiro kato?
SQL: SELECT "manufacturer" FROM race_results_2002_malaysian WHERE "rider" = 'daijiro kato'

Question: Which Time/Retired has a Manufacturer of yamaha, and a Rider of garry mccoy?
SQL: SELECT "time_retired" FROM race_results_2002_malaysian WHERE "manufacturer" = 'yamaha' AND "rider" = 'garry mccoy'