Task: Explanation
Input (English): The Treaty or Peace of Oliva of 23 April (OS)/3 May (NS) 1660 (Polish: "Pokój Oliwski" , Swedish: "Freden i Oliva" , German: "Vertrag von Oliva" ) was one of the peace treaties ending the Second Northern War (1655-1660). At Oliva (Oliwa, Royal Prussia), peace was made between Sweden, the Polish-Lithuanian Commonwealth, the Habsburgs and Brandenburg-Prussia. Question: Swedish Livonia, which constituted the southern part of modern Estonia, was fully ceded in what peace treaty between Sweden, the Polish-Lithuanian Commonwealth, the Habsburgs and Brandenburg-Prussia? Answer: Treaty of Oliva
Output (English):  At Oliva Oliwa, Royal Prussia, peace was made between Sweden, the PolishLithuanian Commonwealth, the Habsburgs and BrandenburgPrussia.