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.

Passage: The uprising greatly reduced the Tver Principality's power in the northeastern remains of Kievan Rus'. In 1328, Öz Beg granted Ivan Kalita the duchies of Novgorod and Kostroma. Alexander Vasilyevich, the prince of Suzdal, received Vladimir and a region encompassing present day Nizhny Novgorod and Gorodets. By granting the more prestigious Vladimir to the weaker of the two princes, Öz Beg maintained adherence to the principle of "divide and rule," reasoning that Moscow's jealousy of Suzdal's lands would prevent them from allying to fight against the Golden Horde. Alexander moved to Sweden after his time in Lithuania, and then back to Pskov after the city's excommunication was lifted, under the patronage of Gediminas, Grand Duke of Lithuania. In 1335, he gained forgiveness from Öz Beg and was allowed to return to his former position in Tver, however by then, the state had lost most of its influence, being replaced by the Grand Duchy of Muscovy. This return did not last long, as both Alexander and his son Fyodor were taken to Sarai and quartered in 1339. Following the execution of Alexander Vasilievich in 1331, Ivan received the duchy of Vladimir and became the sole ruler of northeastern Russia. Favor from the khan of the Golden Horde allowed Moscow to gain power rapidly at the expense of Tver, with Tver eventually losing all influence to Moscow. However, a new rivalry was formed between the princes of Suzdal-Nizhny Novgorod. The relative power of Moscow and their strong alliance with the Horde led to a period of relative peace in Russia that was not interrupted until the reign of Dmitry Donskoy, the first prince of Moscow to openly challenge the Horde. He would later defeat them at the Battle of Kulikovo in 1380.
Question: Why was Alexander Vasiliveich taken to Sarai?
span

Passage: In January 1454, the year that Casimir IV was married to Elisabeth Habsburg, the Prussian faction asked Casimir IV and protection by the Kingdom of Poland. Casimir asked the Prussian Confederation for a more formal petition. On 4 February 1454, the Secret Council of the Prussian Confederation sent a formal act of disobedience to the Grand Master. Two days later the confederacy started its rebellion and soon almost all Prussia, except for Marienburg, Stuhm , and Konitz , were free from Teutonic rule. Most of the captured Ordensburg castles were immediately destroyed. On 10 February 1454, the confederacy sent an official delegation to Poland, headed by Johannes von Baysen. By 20 February, the delegates were in Kraków and asked Casimir to bring Prussia into the Polish kingdom. After negotiating the exact conditions of incorporation, the king agreed and delegates of the Prussian Confederation pledged allegiance to Casimir on 6 March 1454. On the same day, the king agreed to all the conditions of the Prussian delegates — for instance Thorn demanded the destruction of the Polish city of Nieszawa — giving wide privileges to the Prussian cities and nobility. Three days later, Johannes von Baysen was named as the first governor of Prussia. After 15 April, most of the Prussian estates, with the exception of the Prince-Bishopric of Warmia, pledged allegiance to their new ruler. Poland sent the Grand Master a declaration of war, predated to 22 February. Both sides expected the war to end quickly.
Question: On what date did the confederacy start it's rebellion where soon after almost all Prussia was free from Teutonic rule?
date

Passage: Setu coins or Setu bull coins are found in large quantities in the northern part of Sri Lanka and in Southern India. Codrington in his book Ceylon Coins and Currency published in 1924 and Mitchiner in his book Oriental Coins published in 1978 have clearly pointed out that the traditional design of Sri Lanka standing King Type Copper Massa  of the Jaffna Kingdoms belongs to the Aryacakravarti dynasty from 1284 AD to 1410 AD. Setu coins were previously attributed to the Setupati Princes of Ramanathapuram in South India. There are two series one in the issued from the 13th to the 15th centuries and the other after the brief loss of sovereignty to the rival Kotte kingdom from 1450 to 1467 and reconstitution of the Kingdom. Even during the rule of Sapumal Kumaraya coins were issued in Jaffna that was distinct. Three types of this series are illustrated below. The obverse of these coins have a human figure flanked by lamps and the reverse has the Nandi  symbol, the legend Sethu in Tamil with a crescent moon above. There are number of categories of these coins. In type I  is closely aligned with the Chola copper coins of the 13th century although slightly larger in size. The Tamil Setu replaces the Nagari Rajaraja in the cola coins. In type I  the blank is even broader but a recumbent bull appera obverse in a vertical position. In the coin type II the seated figure is replaced with a Bull.
Question: What can you see on the revers of the Setu coin?

span