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: 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: At the beginning of the period the Time of Troubles disorganized the frontier defenses and led to much destruction. The Oka region was raided almost every year, but with decreasing frequency. 1633 may have been the last crossing of the Oka. We hear more frequently of raids at such places as Kursk and Voronezh, implying stronger defense in the north and a southern movement of the Russian population. The Belgorod Line of forts was begun about 1633 and seems to have had noticeable effects after about 1640. We hear of raids on Poland in 1614-21, 1624-28, 1633, 1640 and 1642.
Question: How many years since the first and last raid passed that we heard about in Poland?

A: number
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Q: Passage: Van Coehoorn was born in March 1641, one of six sons of Goosewijn van Coehoorn and Aaltje van Hinckena on the Lettinga State in the village of Britsum near Leeuwarden in the Dutch province of Friesland. His father was an officer of German descent in a Friesland regiment of the Dutch States Army and a member of the petty nobility. Menno was educated at home with his brothers, then later at the University of Franeker by his uncle Bernardus Fullenius, where he showed a talent for mathematics and military drawing. In 1657, he was commissioned as a Lieutenant in his father's company, which formed part of the permanent garrison in Maastricht. In 1678, Van Coehoorn married Magdalena van Scheltinga; they had four surviving children, Goosewijn , Gertruda , Hendrik and Amalia . Magdalena died in 1683 and he later married Truytje van Wigara . He died on 17 March 1704.
Question: How many years old was Van Coehoorn when he died?

A:
number
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