Table: air_combat_3
Columns: number
time
aircraft
opponent
location

Question: What number is in Bois de Warville with a time less than 810?
SQL: SELECT SUM("number") FROM air_combat_3 WHERE "location" = 'bois de warville' AND "time" < 810

Question: What is number 21's highest time?
SQL: SELECT MAX("time") FROM air_combat_3 WHERE "number" = 21

Question: What number with the opponent Fokker D.vii have with a time of 1655?
SQL: SELECT SUM("number") FROM air_combat_3 WHERE "opponent" = 'fokker d.vii' AND "time" = 1655

Question: Who is the opponent with a time higher than 1040, a Spad xiii aircraft in Dun-Sur-Meuse with a lower number than 22?
SQL: SELECT "opponent" FROM air_combat_3 WHERE "time" > 1040 AND "aircraft" = 'spad xiii' AND "number" < 22 AND "location" = 'dun-sur-meuse'

Question: What number has the opponent Fokker d.vii with a time of 600?
SQL: SELECT SUM("number") FROM air_combat_3 WHERE "opponent" = 'fokker d.vii' AND "time" = 600