Question: What is the largest lake in the country that headquartered the organization that intervened in border conflicts between Colombia and Peru with mediation for the governments?

<P0-S0> the akosombo dam, also known as the volta dam, is a hydroelectric dam on the volta river in southeastern ghana in the akosombo gorge and part of the volta river authority. <P0-S1> the construction of the dam flooded part of the volta river basin, and led to the subsequent creation of lake volta. <P0-S2> the flooding that created the lake volta reservoir displaced many people and had a significant impact on the local environment. <P0-S3> lake volta is the largest man-made lake in the world by surface area. <P0-S4> it covers , which is 3.6% of ghana's land area. <P0-S5> with a volume of 148 cubic kilometers, lake volta is the world's third largest man-made lake by volume, the largest being lake kariba which is located between zimbabwe and zambia in southern africa and contains 185 cubic kilometers of water. <SEP> <P1-S0> A large number of international institutions have their seats in Switzerland, in part because of its policy of neutrality. <P1-S1> Geneva is the birthplace of the Red Cross and Red Crescent Movement and the Geneva Conventions and, since 2006, hosts the United Nations Human Rights Council. <P1-S2> Even though Switzerland is one of the most recent countries to have joined the United Nations, the Palace of Nations in Geneva is the second biggest centre for the United Nations after New York, and Switzerland was a founding member and home to the League of Nations. <SEP> <P2-S0> Switzerland lies between latitudes 45° and 48° N, and longitudes 5° and 11° E. It contains three basic topographical areas: the Swiss Alps to the south, the Swiss Plateau or Central Plateau, and the Jura mountains on the west. <P2-S1> The Alps are a high mountain range running across the central-south of the country, comprising about 60% of the country's total area. <P2-S2> The majority of the Swiss population live in the Swiss Plateau. <P2-S3> Among the high valleys of the Swiss Alps many glaciers are found, totalling an area of 1,063 square kilometres (410 sq mi). <P2-S4> From these originate the headwaters of several major rivers, such as the Rhine, Inn, Ticino and Rhône, which flow in the four cardinal directions into the whole of Europe. <P2-S5> Switzerland has more than 1500 lakes, and contains 6% of Europe's stock of fresh water. <P2-S6> Lakes and glaciers cover about 6% of the national territory. <P2-S7> The largest lake is Lake Geneva, in western Switzerland shared with France. <P2-S8> The Rhône is both the main source and outflow of Lake Geneva. <P2-S9> Lake Constance is the second largest Swiss lake and, like the Lake Geneva, an intermediate step by the Rhine at the border to Austria and Germany. <P2-S10> The hydrographic network includes several of the largest bodies of freshwater in Central and Western Europe, among which are included Lake Geneva (also called le Lac Léman in French), Lake Constance (known as Bodensee in German) and Lake Maggiore. <P2-S11> While the Rhône flows into the Mediterranean Sea at the French Camarque region and the Rhine flows into the North Sea at Rotterdam in the Netherlands, about 1000 km apart, both springs are only about 22 km apart from each other in the Swiss Alps. <SEP> <P3-S0> taal lake, formerly known as bombón lake, is a freshwater lake in the province of batangas, on the island of luzon in the philippines. <P3-S1> the lake fills taal caldera, a large volcanic caldera formed by very large eruptions between 500,000 and 100,000 years ago. <P3-S2> it is the country's third-largest lake, after laguna de bay and lake lanao. <P3-S3> volcano island, the location of taal volcano's historical eruptions and responsible for the lake's sulfuric content, lies near the center of the lake. <P3-S4> there is a crater lake on volcano island. <P3-S5> known as the yellow lake or the main crater lake, it contains its own small island, vulcan point. <P3-S6> vulcan point was thought to be the largest third-order island in the world, but treasure island (ontario) is much bigger and is thought to be the world largest, and is also on a freshwater lake. <SEP> <P4-S0> There were several border conflicts between Colombia and Peru in the early part of the 20th century, and in 1922, their governments signed the Salomón-Lozano Treaty in an attempt to resolve them. <P4-S1> As part of this treaty, the border town of Leticia and its surrounding area was ceded from Peru to Colombia, giving Colombia access to the Amazon River. <P4-S2> After months of diplomatic negotiations, the governments accepted mediation by the League of Nations, and their representatives presented their cases before the Council. <P4-S3> On 1 September 1932, business leaders from Peruvian rubber and sugar industries who had lost land, as a result, organised an armed takeover of Leticia. <P4-S4> At first, the Peruvian government did not recognise the military takeover, but President of Peru Luis Sánchez Cerro decided to resist a Colombian re-occupation. <P4-S5> The Peruvian Army occupied Leticia, leading to an armed conflict between the two nations. <P4-S6> A provisional peace agreement, signed by both parties in May 1933, provided for the League to assume control of the disputed territory while bilateral negotiations proceeded. <P4-S7> In May 1934, a final peace agreement was signed, resulting in the return of Leticia to Colombia, a formal apology from Peru for the 1932 invasion, demilitarisation of the area around Leticia, free navigation on the Amazon and Putumayo Rivers, and a pledge of non-aggression.