title: Kongo (mto)
context: Urefu wake ni kilomita 4,700 ukipimwa kuanzia chanzo cha tawimto wa mbali zaidi ambayo ni mto Chambeshi wenye chanzo nchini Zambia. Mara nyingi urefu hutajwa kuanzia chanzo cha Lualaba halafu ni kilomita 4,374.
question: Mto Kongo una urefu gani?
answers.text: 4,700