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.

Q: Passage: The Bethencourt era ended in 1418 when Maciot sold his holdings and the rights to subjugate the remaining islands to Enrique Perez de Guzman. From this point on the intervention of the King of Castile increased. Between 1418 and 1445 dominion over the islands changed hands on a number of occasions. Finally, control over the conquered islands and the right to further conquests fell to Hernan Peraza The Elder and his children Guillen Peraza and Ines Peraza. The death of Guillen Peraza in the attack on La Palma has been immortalized in a moving lament. After the death of her brother Ines and her husband Diego Garcia de Herrera became the sole rulers of the islands until 1477 when they ceded La Gomera to their son Hernan Peraza The Younger and the rights to the conquest of La Palma, Gran Canaria and Tenerife to the King of Castile. The island of La Gomera was not taken in battle but was incorporated into the Peraza-Herrera fiefdom through an agreement between Hernan Peraza The Elder and some of the insular aboriginal groups who accepted the rule of the Castilian. However, there were a number of uprisings by the guanches due to outrages committed by the rulers on the native Gomeros. The last one, in 1488 caused the death of the islands ruler, Hernan Peraza, whose widow, Beatriz de Bobadilla y Ossorio, had to seek the assistance of Pedro de Vera, conqueror of Gran Canaria, in order to snuff out the rebellion. The subsequent repression caused the death of two hundred rebels and many others were sold into slavery in the Spanish markets.
Question: What year did the rebellion end?

A: date
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Q: Passage: Various immediate causes having been ascribed to causing the outbreak of violence in 1454. Professor Griffiths has suggested that Lord Cromwell's manor of Wressle, Yorkshire, was seized by the Percys following the joining of the Cromwell and Neville families in marriage in 1453 , and that Cromwell viewed the Nevilles as allies against the Percys. Likewise, Warwick's feud with Somerset in south Glamorgan may have driven him into an alliance with the duke of York against him. Griffiths also suggests that the single most important event to precipitate the feud was the marriage of Salisbury's second son, Thomas Neville to Maud Stanhope, the widow of Robert, Lord Willoughby. Not only, says Griffiths, was any further aggrandisement for Salisbury's family anathema to the Percys, but the new Cromwell connection gave the Nevilles access to the ex-Percy manors of Wressle and Burwell, two-thirds of which had each been granted to Cromwell for life in February 1438, together with the reversion of the remainder. This grant was then converted into one in fee simple two years later, further reducing the likelihood of the Percys reclaiming it. Griffiths has calculated Burwell to have been worth an income of c. 38 10s 6d per annum in 145-6. These manors had been forfeited in 1403 by the first earl of Northumberland after the failure of the Percy Rebellion against Henry IV, and Cromwell's holding them in fee-simple meant they were available to him to grant away to whoever he liked.
Question: What year was the grant that gave two-thirds of the ex-Percy manors to Cromwell converted?

A: date
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Q: Passage: The Vikings also fought several sea battles among themselves. This was normally done by binding the ships on each side together, thus essentially fighting a land battle on the sea. However the fact that the losing side could not easily escape meant that battles tended to be hard and bloody. The Battle of Svolder is perhaps the most famous of these battles. As Arab power in the Mediterranean began to wane, the Italian trading towns of Genoa, Pisa, and Venice stepped in to seize the opportunity, setting up commercial networks and building navies to protect them. At first the navies fought with the Arabs , but then they found themselves contending with Normans moving into Sicily, and finally with each other. The Genoese and Venetians fought four naval wars, in 1253-1284, 1293-1299,1350-1355, and 1378-1381. The last ended with a decisive Venetian victory, giving it almost a century to enjoy Mediterranean trade domination before other European countries began expanding into the south and west. In the north of Europe, the near-continuous conflict between England and France was characterised by raids on coastal towns and ports along the coastlines and the securing of sea lanes to protect troop-carrying transports. The Battle of Dover in 1217, between a French fleet of 80 ships under Eustace the Monk and an English fleet of 40 under Hubert de Burgh, is notable as the first recorded battle using sailing ship tactics. The battle of Arnemuiden , which resulted in a French victory, marked the opening of the Hundred Years War and was the first battle involving artillery. However the battle of Sluys, fought two years later, saw the destruction of the French fleet in a decisive action which allowed the English effective control of the sea lanes and the strategic initiative for much of the war.
Question: What was the year of the first naval war between the Genoese and Venetians?

A:
date
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