Funso (Chichewa): Ndi maboma ati ali ndi anthu owunikiridwa omwe ali mu gawo lachinayi lakusowa kwa chakudya? 
Question (English): Which districts have non-zero percentage population with insecurity level 4?
Table: food_insecurity (difficulty: easy)
SQL: SELECT DISTINCT district FROM food_insecurity WHERE insecurity_level = 4 AND percentage_population > 0;
Result: [('Balaka',), ('Chikhwawa',), ('Machinga',), ('Mangochi',), ('Mwanza',), ('Neno',), ('Nsanje',), ('Thyolo',), ('Zomba',)]