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: 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

[Q]: Passage: On 31 August, 2000, American citizen and Muslim convert Jeffrey Schilling from Oakland, California was captured on Jolo while visiting a terrorist camp with his new wife, Ivy Osani , whom he had met online. ASG demanded a $10 million ransom. Rebels also sarcastically threatened to behead him in 2001 as a "birthday present" to then Philippine President Gloria Macapagal Arroyo, who responded by declaring "all-out war" on them. The beheading threat was withdrawn after Schilling's mother, Carol, flew to the Philippines and appealed for mercy on local radio. On 12 April, 2001, Philippine soldiers raided a rebel camp and rescued the American. The United States praised the Philippine government for freeing Schilling. Many commentators have been critical of Schilling, who claims to have walked willingly into the camp after he was invited by his wife's cousin, a member of Abu Sayyaf. Schilling was one of more than forty hostages taken by Abu Sayyaf in 2000, including twenty-one tourists and workers seized in a raid on Sipadan diving resort in neighbouring Malaysia. Many of the hostages were released after Libya paid millions of dollars. A Libyan official stated that Schilling had visited the Jolo camp often before his capture. Philippine intelligence sources say he was interested in selling military equipment to the rebels, while the bandits accused him of being a CIA agent. Abu Sayyaf threatened several times to kill Schilling. At one stage, Schilling reportedly went on a hunger strike to win his freedom.
Question: What date were 21 tourists taken hostage by Abu Sayyaf?
[A]: date

[Q]: Passage: As of February 1, 2008, the U.S. Board on Geographic Names had identified 5,564 natural streams in the State of Colorado. Of this number, 147 larger streams (2.6%) were named river and 11 (0.2%) were named rio. The vast majority of the Colorado streams (5082 or 91.3%) were named stream. Of the remaining Colorado streams, 122 (2.2%) were named arroyo (creek), 60 (1.1%) were named wash (creek), 44 (0.8%) were named stream, 18 (0.3%) were named stream, 17 (0.3%) were named stream, 17 (0.3%) were named stream, 15 (0.3%) were named stream, 10 (0.2%) were named River delta, but not a single stream was named stream. Perhaps the strangest stream name in Colorado belongs to the West Fork East Fork Williams Fork located in Garfield County, Colorado.
Question: How many more rivers than rios does Colorado have?
[A]:
number