Question: What is the name of the waterfall in the country that contains Shamva District?

full_context: Document 1: Niagara Falls: Niagara Falls is the collective name for three waterfalls that straddle the international border between the Canadian province of Ontario and the American state of New York. They form the southern end of the Niagara Gorge.
Document 2: Shakadza: Shakadza is a village in Mutale Local Municipality in Vhembe District Municipality in the Limpopo province of South Africa. Shakadza shares borders with neighboring villages "Muswodi", "Mukovhawabale", "Tshokotshoko", "Gundani," and "Tshamutora". The village is divided into four parts: Mavhuvhuni, Tshivhambe, Thondoni 1 and Thondoni 2.
Document 3: Berlin Falls: The Berlin Falls is a waterfall in Mpumalanga, South Africa. They are located close to God's Window and the highest waterfall in South Africa's Mpumalanga province, Lisbon Falls. Whilst less than a tenth of the heigh of South Africa's tallest waterfall, the Tugela Falls, they are nonetheless extremely beautiful.
Document 4: Victoria Falls: Victoria Falls (Tokaleya Tonga: Mosi - oa - Tunya, ``The Smoke that Thunders '') is a waterfall in southern Africa on the Zambezi River at the border between Zambia and Zimbabwe. It has been described by CNN as one of the Seven Natural Wonders of the world.
Document 5: Victoria Falls: Victoria Falls (Tokaleya Tonga: Mosi - oa - Tunya, ``The Smoke that Thunders '') is a waterfall in southern Africa on the Zambezi River at the border between Zambia and Zimbabwe.
Document 6: Shamva District: Shamva is one of seven districts in the Mashonaland Central province of Zimbabwe. The district capital is the village of Shamva.
Document 7: Cachoeira da Fumaça: The Cachoeira da Fumaça ("Smoke Falls", also known as "Glass Falls") is 340 m tall waterfall in Bahia, Brazil. It was believed to be the country's highest waterfall until the 353 m tall Cachoeira do Araca (Cachoeira do El Dorado) was recently discovered in the Amazon.
Document 8: Bindura District: Bindura is one of seven districts in the Mashonaland Central province of Zimbabwe. The district capital is the town of Bindura.
Document 9: Niagara Falls: Located on the Niagara River, which drains Lake Erie into Lake Ontario, the combined falls form the highest flow rate of any waterfall in the world that has a vertical drop of more than 165 feet (50 m). Horseshoe Falls is the most powerful waterfall in North America, as measured by flow rate. The falls are 17 miles (27 km) north - northwest of Buffalo, New York, and 75 miles (121 km) south - southeast of Toronto, between the twin cities of Niagara Falls, Ontario, and Niagara Falls, New York.
Document 10: Centenary, Zimbabwe: Centenary is a village in Mashonaland Central province in Zimbabwe. On June 21, 2001, Centenary was a pilgrimage for those who wanted to see the total solar eclipse, as it was one of the few areas of Zimbabwe that witnessed it.
Document 11: Guruve District: Guruve is one of several districts in the Mashonaland Central province of Zimbabwe. The district capital is the town of Guruve.
Document 12: Chavuma: Chavuma is a town in North Western Zambia, lying immediately south of the border with Angola. The town is approximately 1,100 kilometers from Lusaka and 11 kilometers from the Angolan border town of Kalipande. It lies on the Zambezi River and the M8 road. Local attractions include the Chavuma Falls, while a market takes place on the border, permitting people from both nations to trade.
Document 13: Centenary District: Centenary is one of seven districts in the Mashonaland Central province of Zimbabwe. The district's capital is the town of Centenary.
Document 14: Mazowe District: Mazowe District is the southernmost of seven districts of the Province Mashonaland Central in Zimbabwe. The district capital is the village of Mazowe.
Document 15: Nyambwezi Falls: Nyambwezi Falls are a waterfall located in the North-Western Province of Zambia. They are approximately high. Close to the lip of the falls, there is a rock shelter, which has petroglyphs and other evidence of late Stone Age occupation.
ground_truth: Victoria Falls
sub_queries: Shamva District >> country Answer: Zimbabwe
what is the name of the waterfall in Zimbabwe Answer: Victoria Falls