This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

[EX Q]: Passage: The Greek Navy was relatively modern, strengthened by the recent purchase of numerous new units and undergoing reforms under the supervision of a British mission. Invited by Prime Minister Venizelos in 1910, the mission began its work upon its arrival in May 1911. Granted extraordinary powers and led by Vice Admiral Lionel Grand Tufnell, it thoroughly reorganized the Navy Ministry and dramatically improved the number and quality of exercises in gunnery and fleet maneuvers. In 1912, the core unit of the fleet was the fast armoured cruiser Georgios Averof, completed in 1910 and, at that time, the fastest and most modern warship in the combatant navies. It was complemented by three rather antiquated battleships of the Hydra class. There were also eight destroyers built in 1906-1907, and six new destroyers that were hastily bought in summer 1912 as the imminence of war became apparent. Nevertheless, at the outbreak of the war, the Greek fleet was far from ready. The Ottoman battlefleet retained a clear advantage in number of ships, speed of the main surface units and, more importantly, in the number and caliber of the ships' guns. In addition, as the war caught the fleet in the middle of its expansion and reorganization, fully a third of the fleet only reached Greece after hostilities had started, forcing the navy to reshuffle crews, who consequently suffered from lacking familiarization and training time. Coal stockpiles and other war stores were also in short supply, while the Georgios Averof had arrived with barely any ammunition, and would remain so until late November.
Question: What is the former year when eight destroyers were built?
[EX A]: date

[EX Q]: Passage: At the beginning of 1664, the Imperial Army was divided into three corps: In the south, 17,000 Hungarian-Croatian troops under the command of Nikola Zrinski. In the center, the main army of Montecuccoli, which was 28,500 men strong, and in the north some 8,500 men under General Jean-Louis Raduit de Souches. There were some 12,500 men in reserve to defend the fortresses. This army of 66,500 men was not united, as the differences of opinion between the commanders were very strong, especially with Zrinski. As a preparation for campaigns planned for 1664, Zrinski set out to destroy the strongly fortified Ottoman bridge bridge) which, since 1566, had linked Darda to Osijek across the Drava and the marshes of Baranya. Destruction of the bridge would cut off the retreat of the Ottoman Army and make any Turkish reinforcement impossible for several months. Re-capturing strong fortresses on his way, Zrinski advanced 240 kilometers on enemy territory and destroyed the bridge on February 1, 1664. He didn't succeed in conquering Nagykanizsa, the main objective. The siege had to be lifted when in June the main army of Koprulu approached. The Turks besieged and conquered Zrinski's stronghold Novi Zrin, which had to be abandoned when Montecuccoli refused to come to its rescue. Zrinski would never forgive this, which would eventually lead to the Magnate conspiracy in Croatia, and "Wesselenyi conspiracy" in Hungary).
Question: Which happened later, the destruction of the Ottoman bridge or the Magnate conspiracy in Croatia?
[EX A]: span

[EX Q]: Passage: In November 1944, after Greece was liberated from Germany, old drachmae were exchanged for new ones at the rate of 50,000,000,000 to 1. Only paper money was issued. The government issued notes of 1, 5, 10 and 20 drachmae, with the Bank of Greece issuing 50-, 100-, 500-, 1000-, 5000-, and 10,000-drachma notes. This drachma also suffered from high inflation. The government later issued 100-, 500-, and 1000-drachma notes, and the Bank of Greece issued 20,000-and 50,000-drachma notes. Third modern drachma coins The first issue of coins minted in 1954 consisted of holed aluminium 5-, 10- and 20-lepton pieces, with 50-lepton, 1-, 2-, 5- and 10-drachma pieces in cupro-nickel. A silver 20-drachma piece was issued in 1960, replacing the 20-drachma banknote, and also minted only in collector sets in 1965. Coins in denominations from 50 lepta to 20 drachmae carried a portrait of Paul of Greece (19471964). New coins were introduced in 1966, ranging from 50 lepta to 10 drachmae, depicting Constantine II of Greece (19641974). A silver 30 drachma coin for the centennial of Greeces royal dynasty was minted in 1963. The following year a non-circulating coin of this value was produced to commemorate the royal wedding. The reverse of all coins was altered in 1971 to reflect the military junta which was in power from 1967 to 1974. This design included a soldier standing in front of the flames of the rising phoenix.
Question: What year was the non-circulating 30 drachma coin issued to commemorate the royal wedding?
[EX A]:
date