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.

Input: Consider Input: Passage: Švitrigaila was losing his influence in the Slavic principalities and could no longer resist Poland and Sigismund. On 4 September 1437 he attempted to reconcile with Poland: he would rule the lands that still backed him , and after his death these territories would pass to the King of Poland. However, under strong protest from Sigismund, the Polish Senate declined to ratify the treaty . In 1438 Švitrigaila withdrew to Moldavia. The reign of Sigismund Kęstutaitis was brief — he was assassinated in 1440. Švitrigaila returned from exile in 1442 and ruled Lutsk until his death a decade later. Jogaila's son Casimir IV Jagiellon, born in 1426, received approval as a hereditary hospodar from Lithuania's ruling families in 1440. This event is seen by the historians Jerzy Lukowski and Hubert Zawadzki as marking the end of the succession dispute.
Question: What year did Švitrigaila die?

Output: date


Input: Consider Input: Passage: In week 7, the Lions hosted the Washington Redskins. After a scoreless first quarter, each team scored only a field goal in the second quarter: first Detroit's Matt Prater from 43 yards, then Washington's Dustin Hopkins from 38 yards, to tie the game at three points apiece at halftime. The only score of the third quarter was a one-yard touchdown run by the Lions' Zach Zenner. The Lions extended their lead in the fourth quarter via a 27-yard field goal from Prater. The Redskins responded with 14 consecutive points on a pair of touchdowns, first with a one-yard pass from Kirk Cousins to Robert Kelley, and next on a 19-yard run by Cousins. This give the Redskins their first lead of the game, 17-13, with just over a minute to go. The Lions took the lead back on the next drive, when Matthew Stafford hit Anquan Boldin for an 18-yard TD with 16 seconds left, to win the game, 20-17.
Question: Who kicked first half field goals?

Output: span


Input: Consider Input: Passage: Pilgrims circumambulate the monastery on the lingkhor  outside the walls. Fortunately, although two-thirds of the buildings were destroyed during the excesses of the Chinese Cultural Revolution, they were mainly the residences for the 4,000 monks and the monastery itself was not as extensively damaged as most other religious structures in Tibet, for it was the seat of the Panchen Lama who remained in Chinese-controlled territory. However, during 1966 Red Guards led a crowd to break statues, burn scriptures and open the stupas containing the relics of the 5th to 9th Panchen Lamas, and throw them in the river. Some remains, though, were saved by locals, and in 1985, Choekyi Gyaltsen, 10th Panchen Lama, began the construction of a new stupa to house them and honour his predecessors. It was finally consecrated on 22 January 1989, just six days before he died aged fifty-one at Tashi Lhunpo. "It was as if he was saying now he could rest."
Question: On what dday did Cheokyi Gyaltsen die?


Output: date