Problem: Kievan Rus%27:

The expansion of the Rus' put further military and economic pressure on the Khazars, depriving them of territory, tributaries, and trade. In around 890, Oleg waged an indecisive war in the lands of the lower Dniester and Dnieper rivers with the Tivertsi and the Ulichs, who were likely acting as vassals of the Magyars, blocking Rus' access to the Black Sea. In 894, the Magyars and Pechenegs were drawn into the wars between the Byzantines and the Bulgarian Empire. The Byzantines arranged for the Magyars to attack Bulgarian territory from the north, and Bulgaria in turn persuaded the Pechenegs to attack the Magyars from their rear. Boxed in, the Magyars were forced to migrate further west across the Carpathian Mountains into the Hungarian plain, depriving the Khazars of an important ally and a buffer from the Rus'. The migration of the Magyars allowed Rus' access to the Black Sea, and they soon launched excursions into Khazar territory along the sea coast, up the Don river, and into the lower Volga region. The Rus' were raiding and plundering into the Caspian Sea region from 864, with the first large-scale expedition in 913, when they extensively raided Baku, Gilan, Mazandaran and penetrated into the Caucasus.

Who had a peaceful alliance with the Byzantines and Bulgarian Empires?
---
A: unanswerable

Problem: Molotov%E2%80%93Ribbentrop Pact:

In August 1940, the Soviet Union briefly suspended its deliveries under their commercial agreement after their relations were strained following disagreement over policy in Romania, the Soviet war with Finland, Germany falling behind in its deliveries of goods under the pact and with Stalin worried that Hitler's war with the West might end quickly after France signed an armistice. The suspension created significant resource problems for Germany. By the end of August, relations improved again as the countries had redrawn the Hungarian and Romanian borders, settled some Bulgarian claims and Stalin was again convinced that Germany would face a long war in the west with Britain's improvement in its air battle with Germany and the execution of an agreement between the United States and Britain regarding destroyers and bases. However, in late August, Germany arranged its own occupation of Romania, targeting oil fields. The move raised tensions with the Soviets, who responded that Germany was supposed to have consulted with the Soviet Union under Article III of the MolotovRibbentrop Pact.

What regions weren't redrawn in effort to improve relations between Germany and the Soviets?
---
A: unanswerable

Problem: Estonian language:

Writings in Estonian became significant only in the 19th century with the spread of the ideas of the Age of Enlightenment, during the Estophile Enlightenment Period (17501840). Although Baltic Germans at large regarded the future of Estonians as being a fusion with themselves, the Estophile educated class admired the ancient culture of the Estonians and their era of freedom before the conquests by Danes and Germans in the 13th century.

Who conquered the ancient Danes?
---
A: unanswerable

Problem: Himachal Pradesh:

The Indian Institute of Technology Mandi, Himachal Pradesh University Shimla, Institute of Himalayan Bioresource Technology (IHBT, CSIR Lab), Palampur, the National Institute of Technology, Hamirpur, Indian Institute of Information Technology, Una the Central University Dharamshala, AP Goyal (Alakh Prakash Goyal) Shimla University, The Bahra University (Waknaghat, Solan) the Baddi University of Emerging Sciences and Technologies Baddi, IEC University, Shoolini University Of Biotechnology and Management Sciences, Solan, Manav Bharti University Solan, the Jaypee University of Information Technology Waknaghat, Eternal University, Sirmaur & Chitkara University Solan are some of the pioneer universities in the state. CSK Himachal Pradesh Krishi Vishwavidyalya Palampur is one of the most renowned hill agriculture institutes in world. Dr. Yashwant Singh Parmar University of Horticulture and Forestry has earned a unique distinction in India for imparting teaching, research and extension education in horticulture, forestry and allied disciplines. Further, state-run Jawaharlal Nehru Government Engineering College started in 2006 at Sundernagar.

What is the Indian Institute of Technology Mandi known for in the world?
---
A:
unanswerable