Task: Question Answering
Input (English): Context: The Siege of Paysandu began 3 December 1864, during the Uruguayan War, when Brazilian forces (under Marquis of Tamandare) and Colorado forces (under Venancio Flores) attempted to capture the city of Paysandu in Uruguay from its Uruguayan Army defenders. 
 Question: What year did Siege of Paysandu start?
Output (English): 3 december 1864