Article: Likewise, group theory helps predict the changes in physical properties that occur when a material undergoes a phase transition, for example, from a cubic to a tetrahedral crystalline form. An example is ferroelectric materials, where the change from a paraelectric to a ferroelectric state occurs at the Curie temperature and is related to a change from the high-symmetry paraelectric state to the lower symmetry ferroelectic state, accompanied by a so-called soft phonon mode, a vibrational lattice mode that goes to zero frequency at the transition.

Question: What stage of a physical transformation can group theory be used to make prediction?
Ans: phase transition

Article:
North Korea: The event was held in Pyongyang on April 28. It was the first time that the Olympic torch has traveled to North Korea. A crowd of thousands waving pink paper flowers and small flags with the Beijing Olympics logo were organized by the authoritarian regime watched the beginning of the relay in Pyongyang, some waving Chinese flags. The event was presided over by the head of the country's parliament, Kim Yong Nam. The North, an ally of China, has been critical of disruptions to the torch relay elsewhere and has supported Beijing in its actions against protests in Tibet. Kim passed the torch to the first runner Pak Du Ik, who played on North Korea's 1966 World Cup soccer team, as he began the 19-kilometre route through Pyongyang. The relay began from the large sculpted flame of the obelisk of the Juche Tower, which commemorates the national ideology of Juche, or "self-reliance", created by the country's late founding President Kim Il Sung, father of leader Kim Jong Il, who did not attend.

Question: Who was the first runner with the torch?
Ans: Pak Du Ik

Article: Public expenditure rose from 10 million in 2001-02 to 12 million in 2005-06 to 28m in 2012-13. The contribution of UK budgetary aid to total SHG government expenditure rose from 4.6 million in to 6.4 million to 12.1 million over the same period. Wages and salaries represent about 38% of recurrent expenditure.

Question: Wages and salaries represent how much % of the island's expenditure?
Ans: 38%

Article: The Germans launched a surprise counter offensive, in the Battle of the Bulge in December 1944, which the Allies turned back in early 1945 after Eisenhower repositioned his armies and improved weather allowed the Air Force to engage. German defenses continued to deteriorate on both the eastern front with the Soviets and the western front with the Allies. The British wanted Berlin, but Eisenhower decided it would be a military mistake for him to attack Berlin, and said orders to that effect would have to be explicit. The British backed down, but then wanted Eisenhower to move into Czechoslovakia for political reasons. Washington refused to support Churchill's plan to use Eisenhower's army for political maneuvers against Moscow. The actual division of Germany followed the lines that Roosevelt, Churchill and Stalin had previously agreed upon. The Soviet Red Army captured Berlin in a very large-scale bloody battle, and the Germans finally surrendered on May 7, 1945.

Question: What nation's military conquered Berlin?
Ans:
Soviet