Question: The Raid on Manila of January 1798 was a Royal Navy false flag military operation during the French Revolutionary Wars intended to scout the strength of the defences of Manila, capital of the Spanish Philippines, capture a Manila galleon and assess the condition of the Spanish Navy squadron maintained in the port, a major invasion of the Spanish Philippines had been planned from British India during 1797, but had been called off following the Treaty of Campo Formio, it was signed on which date, (27 Vendémiaire VI) by Napoleon Bonaparte and Count Philipp von Cobenzl as representatives of the French Republic and the Austrian monarchy, respectively?
{'answer': '18 October 1797', 'supporting_facts': [['Raid on Manila (1798)', 3], ['Treaty of Campo Formio', 0]]}