Input: Read this: Ahmad ibn Fadlan, an Arab traveler during the 10th century, provided one of the earliest written descriptions of the Rus': "They are as tall as a date palm, blond and ruddy, so that they do not need to wear a tunic nor a cloak; rather the men among them wear garments that only cover half of his body and leaves one of his hands free." Liutprand of Cremona, who was twice an envoy to the Byzantine court (949 and 968), identifies the "Russi" with the Norse ("the Russi, whom we call Norsemen by another name") but explains the name as a Greek term referring to their physical traits ("A certain people made up of a part of the Norse, whom the Greeks call [...] the Russi on account of their physical features, we designate as Norsemen because of the location of their origin."). Leo the Deacon, a 10th-century Byzantine historian and chronicler, refers to the Rus' as "Scythians" and notes that they tended to adopt Greek rituals and customs.
Question: Which early traveler provided an early description of the Rus?

Output: Ahmad ibn Fadlan

QUES: Some countries were not included for various reasons, such as being a non-UN member or unable or unwilling to provide the necessary data at the time of publication. Besides the states with limited recognition, the following states were also not included.

What three reasons were mentioned for countries being excluded?
What is the answer?
ANS: being a non-UN member or unable or unwilling to provide the necessary data at the time of publication

QUES: The relational model also allowed the content of the database to evolve without constant rewriting of links and pointers. The relational part comes from entities referencing other entities in what is known as one-to-many relationship, like a traditional hierarchical model, and many-to-many relationship, like a navigational (network) model. Thus, a relational model can express both hierarchical and navigational models, as well as its native tabular model, allowing for pure or combined modeling in terms of these three models, as the application requires.
How was the relational model able to improve over time?

ANS: without constant rewriting of links and pointers

Beyond this, BYU also runs a very large study abroad program, with satellite centers in London, Jerusalem, and Paris, as well as more than 20 other sites. Nearly 2,000 students take advantage of these programs yearly. In 2001, the Institute of International Education ranked BYU as the number one university in the U.S. to offer students study abroad opportunities. The BYU Jerusalem Center, which was closed in 2000 due to student security concerns related to the Second Intifada and, more recently, the 2006 Israel-Lebanon conflict, was reopened to students in the Winter 2007 semester.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When was the BYU Jerusalem Center reopened for students following it's closure in 2000?
Ah, so.. Winter 2007 semester

Question: The mantle is equivalent to 10 to 15 Earth masses and is rich in water, ammonia and methane. As is customary in planetary science, this mixture is referred to as icy even though it is a hot, dense fluid. This fluid, which has a high electrical conductivity, is sometimes called a waterammonia ocean. The mantle may consist of a layer of ionic water in which the water molecules break down into a soup of hydrogen and oxygen ions, and deeper down superionic water in which the oxygen crystallises but the hydrogen ions float around freely within the oxygen lattice. At a depth of 7000 km, the conditions may be such that methane decomposes into diamond crystals that rain downwards like hailstones. Very-high-pressure experiments at the Lawrence Livermore National Laboratory suggest that the base of the mantle may comprise an ocean of liquid carbon with floating solid 'diamonds'.
Try to answer this question if possible: What does Neptune's mantle lack?
Answer: unanswerable

Problem: The Special Clerical Court handles crimes allegedly committed by clerics, although it has also taken on cases involving lay people. The Special Clerical Court functions independently of the regular judicial framework and is accountable only to the Supreme Leader. The Court's rulings are final and cannot be appealed. The Assembly of Experts, which meets for one week annually, comprises 86 "virtuous and learned" clerics elected by adult suffrage for eight-year terms. As with the presidential and parliamentary elections, the Guardian Council determines candidates' eligibility. The Assembly elects the Supreme Leader and has the constitutional authority to remove the Supreme Leader from power at any time. It has not challenged any of the Supreme Leader's decisions.
The Assembly of Experts has how many clerics?
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Answer:
86