name the military unit whose garrison is potsdam-mittelmark and command structure is kommando landstreitkraefte ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_garrison dbr_Potsdam-Mittelmark sep_dot var_uri dbo_commandStructure dbr_Kommando_Landstreitkraefte sep_dot var_uri a dbo_MilitaryUnit brack_close