Question: the Klaipėda Revolt of the Directorate of the Klaipėda Region took place at the north of which river?

<P0-S0> Group D of the EuroBasket 2011 took place between August 31 and September 5, 2011. <P0-S1>  The group played all of its games at Klaipėda Arena in Klaipėda, Lithuania. <SEP> <P1-S0>  It was established by local German political parties to govern the region between the signing of the Treaty of Versailles and establishment of French provision administration. <P1-S1>  Instead of replacing it, the French legitimized the Directorate. <P1-S2> The Directorate of the Klaipėda Region (German: "Landesdirektorium" ; Lithuanian: "Klaipėdos krašto direktorija" ) was the main governing institution (executive branch) in the Klaipėda Region (Memel Territory) from February 1920 to March 1939. <P1-S3>  It mainly represented German interests and supported the idea of leaving the region as a free city, similar to the Free City of Danzig. <P1-S4>  Dismayed Lithuanian government and Prussian Lithuanian activists, who campaigned for incorporation into Lithuania, organized the Klaipėda Revolt in January 1923. <P1-S5>  The revolt was staged as a popular uprising against the unbearable oppression by the German Directorate. <P1-S6>  The revolt was successful and the region was incorporated into Lithuania as an autonomous region, governed by the Klaipėda Convention of May 1924. <SEP> <P2-S0> The Parliament of the Klaipėda Region ("Chamber of Representatives of the Memel Territory", Lithuanian: "Seimelis" ) was the parliament of the Klaipėda Region (Memel Territory), an autonomous region of Lithuania. <P2-S1>  The parliament was established by the Klaipėda Convention of 1924 and the first elections took place in October 1925. <P2-S2>  In all elections pro-German parties received more than 80% of the vote. <P2-S3>  The major parties included the Memel Agricultural Party ("Memelländische Landwirtschaftspartei" or MLP), Memel People's Party ("Memelländische Volkspartei" or MVP), and Social Democratic Party of the Memel Territory ("Sozialdemokratische Partei des Memelgebietes" or SPM). <P2-S4>  The pro-German parliament often clashed with the pro-Lithuanian Klaipėda Directorate (executive branch of local government) and the first three parliaments were dismissed before the end of their full three-year term. <P2-S5>  The parliament was disbanded after the ultimatum of March 1939 and subsequent Nazi German takeover of the region. <SEP> <P3-S0>  The region, located north of the Neman River, was detached from East Prussia, Germany by the Treaty of Versailles and became a mandate of the League of Nations. <P3-S1>  It was placed under provisional French administration until a more permanent solution could be worked out. <P3-S2>  Lithuania wanted to unite with the region (part of Lithuania Minor) due to its large Lithuanian-speaking minority of Prussian Lithuanians and major port of Klaipėda (Memel) – the only viable access to the Baltic Sea for Lithuania. <P3-S3>  As the Conference of Ambassadors favored leaving the region as a free city, similar to the Free City of Danzig, the Lithuanians organized and staged a revolt. <P3-S4> The Klaipėda Revolt took place in January 1923 in the Klaipėda Region (Memel Territory, Memelland).