Question: What municipality did former municipality Pizy merge with in Switzerland?

full_context: Document 1: L'Auberge (restaurant): L'Auberge is a defunct restaurant located in Weert in the Netherlands. It was a fine dining restaurant that was awarded one Michelin stars in the period 1986-1991 and two Michelin stars in the period 1992-2000. The restaurant closed down due to bankruptcy. According to the Volkskrant, the restaurant building itself and its appearance, rather than its kitchen, would preclude the restaurant from obtaining a third Michelin star.
Document 2: Sommeri: Sommeri is a municipality in the district of Arbon in the canton of Thurgau in Switzerland.
Document 3: Lausanne: Lausanne ( , ] , German: "Lausanne" , and also "Lausannen" Italian: "Losanna" , Romansh: "Losanna" ) is a city in the French-speaking part of Switzerland, and the capital and biggest city of the canton of Vaud. The city is situated on the shores of Lake Geneva (French: "Lac Léman" , or simply "Le Léman"). It faces the French town of Évian-les-Bains, with the Jura Mountains to its north-west. Lausanne is located 62 km northeast of Geneva.
Document 4: Beromünster: Beromünster is a municipality in the district of Sursee in the canton of Lucerne in Switzerland. On 1 January 2004 the former municipality of Schwarzenbach merged into the municipality of Beromünster. On 1 January 2009 the former municipality of Gunzwil merged into the municipality of Beromünster followed by Neudorf on 1 January 2013.
Document 5: Nyon: Nyon ] is a municipality in the district of Nyon in the canton of Vaud in Switzerland. It is located some 25 kilometers north east of Geneva's city centre, and since the 1970s it has become part of the Geneva metropolitan area. It lies on the shores of Lake Geneva and is the seat of the district of Nyon. The town has (as of December 2016 ) a population of . It is connected to the rest of Switzerland by way of the Route Suisse, the A1 Motorway and the railways of the "Arc Lémanique".
Document 6: Vigra: Vigra is a former municipality in Møre og Romsdal county on the west coast of Norway. It is located in the present-day Giske Municipality. The former municipality was made up of the island of Vigra along with many smaller islets surrounding it. The municipality existed from 1890 until 1964 when it was merged into Giske Municipality. The administrative centre of the municipality was the village of Roald, and Vigra Church was the main church for the municipality.
Document 7: Pichl-Kainisch: Pichl-Kainisch is a former municipality in the Salzkammergut in the Liezen (district) Austrian state of Styria. Since the 2015 Styria municipal structural reform, it is part of the municipality Bad Mitterndorf.
Document 8: Arbon Castle: Arbon Castle is a former castle and now the "Historisches Museum Arbon" (Arbon History Museum) located in the municipality of Arbon of the Canton of Thurgau in Switzerland. It is a Swiss heritage site of national significance.
Document 9: Corsier-sur-Vevey: Corsier-sur-Vevey is a municipality in the district of Riviera-Pays-d'Enhaut in the canton of Vaud in Switzerland.
Document 10: Wädenswil: Wädenswil, locally often called "Wädi" or "Wädischwil," is a municipality in the district of Horgen in the canton of Zürich in Switzerland. The population (as of 2013 ) was about 21,000.
Document 11: Aubonne: Aubonne is a municipality in the district of Morges in the canton of Vaud in Switzerland.
Document 12: Ilanz: Ilanz (Romansh: Glion) is a former municipality in the district of Surselva in the Swiss canton of Graubünden. The former municipality Ilanz was congruent with the town Ilanz, which is known now as Ilanz/Glion, as of 1 January 2014. On 1 January 1978 the former municipality of Strada merged into the new municipality of Ilanz. On 1 January 2014 the municipality of Ilanz and the surrounding municipalities Castrisch, Ladir, Luven, Pitasch, Riein, Ruschein, Schnaus, Sevgein, Duvin, Pigniu, Rueun and Siat merged into the new municipality of "Ilanz/Glion."
Document 13: Arbon: Arbon is a historic and statistic town and a municipality and district capital of the district of Arbon in the canton of Thurgau in Switzerland.
Document 14: Arbon District: Arbon District is one of the five districts of the canton of Thurgau in Switzerland. It has a population of (as of 31 December 2016 ). Its capital is the town of Arbon.
Document 15: Pizy: Pizy is a former municipality in the Swiss canton of Vaud. It is located in the district of Morges. On July 1, 2011 it was merged into Aubonne.
ground_truth: Aubonne