Problem: Given the question: Extract the answer to the question from the following context. Question: How many combats were made in January 1941? Context: Whitehall's disquiet at the failures of the RAF led to the replacement of Dowding (who was already due for retirement) with Sholto Douglas on 25 November. Douglas set about introducing more squadrons and dispersing the few GL sets to create a carpet effect in the southern counties. Still, in February 1941, there remained only seven squadrons with 87 pilots, under half the required strength. The GL carpet was supported by six GCI sets controlling radar-equipped night-fighters. By the height of the Blitz, they were becoming more successful. The number of contacts and combats rose in 1941, from 44 and two in 48 sorties in January 1941, to 204 and 74 in May (643 sorties). But even in May, 67% of the sorties were visual cat's-eye missions. Curiously, while 43% of the contacts in May 1941 were by visual sightings, they accounted for 61% of the combats. Yet when compared with Luftwaffe daylight operations, there was a sharp decline in German losses to 1%. If a vigilant bomber crew could spot the fighter first, they had a decent chance at evading it.
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The answer is:
two

Problem: Given the question: Extract the answer to the question from the following context. Question: What was Terra Mariana a part of? Context: From 1228, after of the Livonian Crusade, through the 1560s, Estonia was part of Terra Mariana, established on 2 February 1207 as a principality of the Holy Roman Empire and proclaimed by Pope Innocent III in 1215 as subject to the Holy See. The southern parts of the country were conquered by Livonian Brothers of the Sword who joined the Teutonic Order in 1237 and became its branch known as the Livonian Order. The Duchy of Estonia was created out of the northern parts of the country and was a direct dominion of the King of Denmark from 1219 until 1346, when it was sold to the Teutonic Order and became part of the Ordenstaat. In 1343, the people of northern Estonia and Saaremaa rebelled against German rule in the St. George's Night Uprising, which was put down by 1345. The unsuccessful rebellion led to a consolidation of power for the Baltic German minority. For the subsequent centuries they remained the ruling elite in both cities and in the countryside.
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The answer is:
Holy Roman Empire

Problem: Given the question: Extract the answer to the question from the following context. Question: Which isotope of uranium is less common, uranium-238 or uranium-237? Context: Natural uranium consists of three major isotopes: uranium-238 (99.28% natural abundance), uranium-235 (0.71%), and uranium-234 (0.0054%). All three are radioactive, emitting alpha particles, with the exception that all three of these isotopes have small probabilities of undergoing spontaneous fission, rather than alpha emission. There are also five other trace isotopes: uranium-239, which is formed when 238U undergoes spontaneous fission, releasing neutrons that are captured by another 238U atom; uranium-237, which is formed when 238U captures a neutron but emits two more, which then decays to neptunium-237; uranium-233, which is formed in the decay chain of that neptunium-237; and finally, uranium-236 and -240, which appear in the decay chain of primordial plutonium-244. It is also expected that thorium-232 should be able to undergo double beta decay, which would produce uranium-232, but this has not yet been observed experimentally.
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The answer is:
uranium-237