Table: air_combat_2
Columns: date
unit
aircraft
opponent
location

Question: What aircraft is located at S of Avion?
SQL: SELECT "aircraft" FROM air_combat_2 WHERE "location" = 's of avion'

Question: What is the Unit for the Aircraft F.e.2b, located in Logeast?
SQL: SELECT SUM("unit") FROM air_combat_2 WHERE "aircraft" = 'f.e.2b' AND "location" = 'logeast'