Problem: Wood:

Wood to be used for construction work is commonly known as lumber in North America. Elsewhere, lumber usually refers to felled trees, and the word for sawn planks ready for use is timber. In Medieval Europe oak was the wood of choice for all wood construction, including beams, walls, doors, and floors. Today a wider variety of woods is used: solid wood doors are often made from poplar, small-knotted pine, and Douglas fir.

What do people outside of North America call the sawn boards used for building?
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A: timber


Problem: In grading lumber and structural timber, knots are classified according to their form, size, soundness, and the firmness with which they are held in place. This firmness is affected by, among other factors, the length of time for which the branch was dead while the attaching stem continued to grow.
Along with firmness, soundness, and form, what property of a knot is classified?
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Answer: size


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
At the time of uploading a video, YouTube users are shown a message asking them not to violate copyright laws. Despite this advice, there are still many unauthorized clips of copyrighted material on YouTube. YouTube does not view videos before they are posted online, and it is left to copyright holders to issue a DMCA takedown notice pursuant to the terms of the Online Copyright Infringement Liability Limitation Act. Three successful complaints for copyright infringement against a user account will result in the account and all of its uploaded videos being deleted.
Posting a video without consent of the copyright holder is what according to youtube?
A: unauthorized


Context and question: The vast Seleucid Empire was, like Egypt, mostly dominated by a Greco-Macedonian political elite. The Greek population of the cities who formed the dominant elite were reinforced by emigration from Greece. These cities included newly founded colonies such as Antioch, the other cities of the Syrian tetrapolis, Seleucia (north of Babylon) and Dura-Europos on the Euphrates. These cities retained traditional Greek city state institutions such as assemblies, councils and elected magistrates, but this was a facade for they were always controlled by the royal Seleucid officials. Apart from these cities, there were also a large number of Seleucid garrisons (choria), military colonies (katoikiai) and Greek villages (komai) which the Seleucids planted throughout the empire to cement their rule. This 'Greco-Macedonian' population (which also included the sons of settlers who had married local women) could make up a phalanx of 35,000 men (out of a total Seleucid army of 80,000) during the reign of Antiochos III. The rest of the army was made up of native troops. Antiochus III the great conducted several vigorous campaigns to retake all the lost provinces of the empire since the death of Seleucus I. After being defeated by Ptolemy IV's forces at Raphia (217), Antiochus III led a long campaign to the east to subdue the far eastern breakaway provinces (212-205) including Bactria, Parthia, Ariana, Sogdiana, Gedrosia and Drangiana. He was successful, bringing back most of these provinces into at least nominal vassalage and receiving tribute from their rulers. After the death of Ptolemy IV (204), Antiochus took advantage of the weakness of Egypt to conquer Coele-Syria in the fifth Syrian war (202-195). He then began expanding his influence into Pergamene territory in Asia and crossed into Europe, fortifying Lysimachia on the hellespont, but his expansion into Anatolia and Greece was abruptly halted after a decisive defeat at the Battle of Magnesia (190 BCE). In the Treaty of Apamea which ended the war, Antiochus lost all of his territories in Anatolia west of the Taurus and was forced to pay a large indemnity of 15,000 talents.
Who defeated Antiochus III at Raphia?
Answer: Ptolemy IV


Question: In March 2003, a second rebel group, Movement for Democracy in Liberia, began launching attacks against Taylor from the southeast. Peace talks between the factions began in Accra in June of that year, and Taylor was indicted by the Special Court for Sierra Leone for crimes against humanity that same month. By July 2003, the rebels had launched an assault on Monrovia. Under heavy pressure from the international community and the domestic Women of Liberia Mass Action for Peace movement, Taylor resigned in August 2003 and went into exile in Nigeria.
Is there an answer to this question: What is "Movement For democracy in Liberia"?

Answer: a second rebel group,


Problem: Solar energy:

The common features of passive solar architecture are orientation relative to the Sun, compact proportion (a low surface area to volume ratio), selective shading (overhangs) and thermal mass. When these features are tailored to the local climate and environment they can produce well-lit spaces that stay in a comfortable temperature range. Socrates' Megaron House is a classic example of passive solar design. The most recent approaches to solar design use computer modeling tying together solar lighting, heating and ventilation systems in an integrated solar design package. Active solar equipment such as pumps, fans and switchable windows can complement passive design and improve system performance.

What is produced when the features of passive solar architecture are customized to the environment?
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A:
well-lit spaces that stay in a comfortable temperature range