Table: concentration_camps
Columns: camp
estimated_deaths
operational
occupied_territory
current_country_of_location
primary_means_for_mass_killings

Question: what's the camp with estimated deaths of 600,000
SQL: SELECT "camp" FROM concentration_camps WHERE "estimated_deaths" = '600,000'

Question: what's the operational period with camp  sajmište
SQL: SELECT "operational" FROM concentration_camps WHERE "camp" = 'Sajmište'

Question: what's the estimated deaths with operational period of 17 march 1942 – end of june 1943
SQL: SELECT "estimated_deaths" FROM concentration_camps WHERE "operational" = '17 March 1942 – end of June 1943'

Question: what's the current country of location with operational period  of summer of 1941 to 28 june 1944
SQL: SELECT "current_country_of_location" FROM concentration_camps WHERE "operational" = 'Summer of 1941 to 28 June 1944'

Question: what's the occupied territory with estimated deaths of 600,000
SQL: SELECT "occupied_territory" FROM concentration_camps WHERE "estimated_deaths" = '600,000'

Question: what's the occupied territory with operational period of may 1940 – january 1945
SQL: SELECT "occupied_territory" FROM concentration_camps WHERE "operational" = 'May 1940 – January 1945'