Table: german_afghan_casualties_2
Columns: date
location
nature_of_incident
circumstances
casualties

Question: What is the nature of the incident in Kabul on 2004-01-28?
SQL: SELECT "nature_of_incident" FROM german_afghan_casualties_2 WHERE "location" = 'kabul' AND "date" = '2004-01-28'

Question: What is the nature of the incident that's a bomb attack?
SQL: SELECT "nature_of_incident" FROM german_afghan_casualties_2 WHERE "circumstances" = 'bomb attack'

Question: What is the nature of the incident with Casualties of 3 wia, and Circumstances of ied?
SQL: SELECT "nature_of_incident" FROM german_afghan_casualties_2 WHERE "casualties" = '3 wia' AND "circumstances" = 'ied'

Question: Which Casualties have a Location of kunduz, and Circumstances of suicide?
SQL: SELECT "casualties" FROM german_afghan_casualties_2 WHERE "location" = 'kunduz' AND "circumstances" = 'suicide'

Question: Which Casualties have a hostile Nature of incident and Circumstances of mortar attack?
SQL: SELECT "casualties" FROM german_afghan_casualties_2 WHERE "nature_of_incident" = 'hostile' AND "circumstances" = 'mortar attack'