Boolean: +Food +Transportation +Africa (93,900,000), food transportation -africa (447,000,000), food -transportation -africa (3,570,000,000), food -transportation africa (317,000,000), food -transportation africa (317,000,000), -food transportation africa (61,300,000), food transportation -africa (447,000,000), food -transportation africa (317,000,000), food -transportation -africa (3,570,000,000),
Boolean: +the (34,900,000,000), +africa (1,930,000,000), +the africa (1,640,000,000), +the -africa (29,500,000,000), -the africa (290,000,000),
Boolean: +food (4,420,000,000), +transportation (1,110,000,000), +africa (1,930,000,000), +Food +Transportation +Africa (93,900,000), food transportation (544,000,000), food +africa (420,000,000), +transportation +africa (141,000,000),