paragraph_text: Euromaidan (; , , , literally "Euro[pean] Square") was a wave of demonstrations and civil unrest in Ukraine, which began on the night of 21 November 2013 with public protests in Maidan Nezalezhnosti ("Independence Square") in Kiev. The protests were sparked by the Ukrainian government's decision to suspend the signing of an association agreement with the European Union, instead choosing closer ties to Russia and the Eurasian Economic Union. The scope of the protests soon widened, with calls for the resignation of President Viktor Yanukovych and his government. The protests were fueled by the perception of "widespread government corruption", "abuse of power", and "violation of human rights in Ukraine". Transparency International named President Yanukovych as the top example of corruption in the world. The situation escalated after the violent dispersal of protesters on 30 November, leading to many more protesters joining. The protests led to the 2014 Ukrainian revolution.

paragraph_text: Rolf Jähnichen joined the Christian Democratic Union (East Germany) in 1981. (Unlike its west German counterpart, the East German CDU, as part of the country's National Front alliance was effectively controlled by the country's ruling SED party.) Between 1984 and 1989 Jähnichen was a member of the local council in his hometown of , on the edge of Leipzig. Between 1989 and 1990 he was a member of the CDU party executive.

paragraph_text: Solar concentrating technologies such as parabolic dish, trough and Scheffler reflectors can provide process heat for commercial and industrial applications. The first commercial system was the Solar Total Energy Project (STEP) in Shenandoah, Georgia, USA where a field of 114 parabolic dishes provided 50% of the process heating, air conditioning and electrical requirements for a clothing factory. This grid-connected cogeneration system provided 400 kW of electricity plus thermal energy in the form of 401 kW steam and 468 kW chilled water, and had a one-hour peak load thermal storage. Evaporation ponds are shallow pools that concentrate dissolved solids through evaporation. The use of evaporation ponds to obtain salt from sea water is one of the oldest applications of solar energy. Modern uses include concentrating brine solutions used in leach mining and removing dissolved solids from waste streams. Clothes lines, clotheshorses, and clothes racks dry clothes through evaporation by wind and sunlight without consuming electricity or gas. In some states of the United States legislation protects the "right to dry" clothes. Unglazed transpired collectors (UTC) are perforated sun-facing walls used for preheating ventilation air. UTCs can raise the incoming air temperature up to 22 °C (40 °F) and deliver outlet temperatures of 45–60 °C (113–140 °F). The short payback period of transpired collectors (3 to 12 years) makes them a more cost-effective alternative than glazed collection systems. As of 2003, over 80 systems with a combined collector area of 35,000 square metres (380,000 sq ft) had been installed worldwide, including an 860 m2 (9,300 sq ft) collector in Costa Rica used for drying coffee beans and a 1,300 m2 (14,000 sq ft) collector in Coimbatore, India, used for drying marigolds.

paragraph_text: Deng Pufang () (born 16 April 1944) is the first son of China's former Paramount leader Deng Xiaoping. He is mostly known for being crippled by the Red Guards and becoming a paraplegic. He has since dedicated his life to improving the rights of people with disabilities.

paragraph_text: Iosif Dan (commonly known as Dan Iosif, 14 October 1950 – 5 December 2007) was a Romanian politician who was a leading figure in the 1989 Romanian revolution, leading protests in Bucharest in the final days of Nicolae Ceauşescu's 25-year rule.

paragraph_text: The marla is a traditional unit of area that was used in India, Pakistan and Bangladesh. The marla was standardized under British rule to be equal to the square rod, or 272.25 square feet, 30.25 square yards, or 25.2929 square metres. As such, it was exactly one 160th of an acre.

paragraph_text: As of 2015, most of the world's lithium production is in South America, where lithium - containing brine is extracted from underground pools and concentrated by solar evaporation. The standard extraction technique is to evaporate water from brine. Each batch takes from 18 to 24 months.

paragraph_text: Wang Chong (; 27 – c. 100 AD), courtesy name Zhongren (仲任), was a Chinese meteorologist, astronomer, and philosopher active during the Han Dynasty. He developed a rational, secular, naturalistic and mechanistic account of the world and of human beings and gave a materialistic explanation of the origin of the universe. His main work was the "Lunheng" (論衡, "Critical Essays"). This book contained many theories involving early sciences of astronomy and meteorology, and Wang Chong was even the first in Chinese history to mention the use of the square-pallet chain pump, which became common in irrigation and public works in China thereafter. Wang also accurately described the process of the water cycle.

paragraph_text: Han-era astronomers adopted a geocentric model of the universe, theorizing that it was shaped like a sphere surrounding the earth in the center. They assumed that the Sun, Moon, and planets were spherical and not disc-shaped. They also thought that the illumination of the Moon and planets was caused by sunlight, that lunar eclipses occurred when the Earth obstructed sunlight falling onto the Moon, and that a solar eclipse occurred when the Moon obstructed sunlight from reaching the Earth. Although others disagreed with his model, Wang Chong accurately described the water cycle of the evaporation of water into clouds.

paragraph_text: The events of the full - blown revolution began in Poland in 1989 and continued in Hungary, East Germany, Bulgaria, Czechoslovakia and Romania. One feature common to most of these developments was the extensive use of campaigns of civil resistance, demonstrating popular opposition to the continuation of one - party rule and contributing to the pressure for change. Romania was the only Eastern Bloc country whose people overthrew its Communist regime violently. Protests in Tiananmen Square (April to June 1989) failed to stimulate major political changes in China, but influential images of courageous defiance during that protest helped to precipitate events in other parts of the globe. On 4 June 1989 the trade union Solidarity won an overwhelming victory in a partially free election in Poland, leading to the peaceful fall of Communism in that country in the summer of 1989. Hungary began (June 1989) dismantling its section of the physical Iron Curtain, leading to a exodus of East Germans through Hungary, which destabilised East Germany. This led to mass demonstrations in cities such as Leipzig and subsequently to the fall of the Berlin Wall in November 1989, which served as the symbolic gateway to German reunification in 1990.

paragraph_text: Erdem Gündüz is a Turkish dancer, actor, performance artist, choreographer, and teacher who, as a result of his actions during the 2013–14 protests in Turkey, has become "the face of the protest movement against the Turkish government." He became internationally known as "The Standing Man" in June 2013 when he stood quietly in Istanbul's Taksim Square as a protest against the Islamist government of Recep Tayyip Erdoğan.

paragraph_text: After returning from the hunt, Theon calls the people to the square, and after Luwin's arrival, reveals to them the charred remains of two children as a warning to those who do not respect his rule. Luwin cries out in horror for Bran and Rickon, while Theon looks upon the corpses and appears visibly uncomfortable, barely able to hide his guilt.

paragraph_text: Dr. John Augustus Just (January 9, 1854 – September 13, 1908) was a German-born chemist and inventor. He is best known for his investigative work into recovery of precious metals from their ores and for completing the process for evaporating milk. For his scientific achievements, he was awarded a medal by the committee celebrating Berthelot's 50th anniversary.

paragraph_text: The 2010 Nobel Peace Prize was awarded to imprisoned Chinese human rights activist Liu Xiaobo ``for his long and non-violent struggle for fundamental human rights in China ''. The laureate, once an eminent scholar, was reportedly little - known inside the People's Republic of China (PRC) at the time of the award due to official censorship; he partook in the Tiananmen Square protests of 1989 and was a co-author of the Charter 08 manifesto, for which he was sentenced to 11 years in prison on 25 December 2009. Liu, who was backed by former Czech president Václav Havel and anti-apartheid activist and cleric Desmond Tutu, also a Nobel Peace Prize winner, received the award among a record field of more than 200 nominees.

paragraph_text: On July 16, 1989, the Popular Front of Azerbaijan held its first congress and elected Abulfaz Elchibey, who would become President, as its Chairman. On August 19, 600,000 protesters jammed Baku’s Lenin Square (now Azadliq Square) to demand the release of political prisoners. In the second half of 1989, weapons were handed out in Nagorno-Karabakh. When Karabakhis got hold of small arms to replace hunting rifles and crossbows, casualties began to mount; bridges were blown up, roads were blockaded, and hostages were taken.

paragraph_text: The first celluloid as a bulk material for forming objects was made in 1855 in Birmingham, England, by Alexander Parkes, who was never able to see his invention reach full fruition, after his firm went bankrupt due to scale - up costs. Parkes patented his discovery after realising a solid residue remained after evaporation of the solvent from photographic collodion.

paragraph_text: The concrete operational stage is the third stage of Piaget's theory of cognitive development. This stage, which follows the preoperational stage, occurs between the ages of 7 and 11 (preadolescence) years, and is characterized by the appropriate use of logic. During this stage, a child's thought processes become more mature and "adult like". They start solving problems in a more logical fashion. Abstract, hypothetical thinking is not yet developed in the child, and children can only solve problems that apply to concrete events or objects. At this stage, the children undergo a transition where the child learns rules such as conservation. Piaget determined that children are able to incorporate inductive reasoning. Inductive reasoning involves drawing inferences from observations in order to make a generalization. In contrast, children struggle with deductive reasoning, which involves using a generalized principle in order to try to predict the outcome of an event. Children in this stage commonly experience difficulties with figuring out logic in their heads. For example, a child will understand that "A is more than B" and "B is more than C". However, when asked "is A more than C?", the child might not be able to logically figure the question out mentally.

paragraph_text: Born in Chongqing in 1955, Xu grew up in Beijing. His father was the head of the history department at Peking University. In 1975, near the end of the Cultural Revolution, he was relocated to the countryside for two years as part of Mao Zedong's "re-education" policy. Returning to Beijing in 1977, he enrolled at the Central Academy of Fine Arts(CAFA) where he joined the printmaking department and also worked during a short period of time as a teacher, receiving his Masters in Fine Art in 1987. After the Tiananmen Square Protests of 1989 his recent work came under scrutiny from the government and received harsh criticism for what was perceived as a critique of the Chinese government. Due to the political pressure and artistic restrictions of the post-Tiananmen period in China, Xu Bing, like many of his contemporaries, moved to the United States in 1990 where he was invited by the University of Wisconsin–Madison. He then resided to the United States until his appointment as vice-president of the Beijing CAFA in 2008.

paragraph_text: Party and government leaders Name Position (s) in 1989 Deng Xiaoping Chairman of the Central Military Commission; de facto ``paramount leader ''Chen Yun Chairman of the CPC Central Advisory Commission Zhao Ziyang General Secretary of the Communist Party of China First Vice-Chairman of the Central Military Commission Li Peng Premier of the People's Republic of China Qiao Shi Secretary of the CPC Central Commission for Discipline Inspection Secretary of the CPC Political and Legislative Affairs Committee Hu Qili First Secretary of the Secretariat of the Communist Party Yao Yilin First Vice Premier of the People's Republic of China Yang Shangkun President of the People's Republic of China Vice-Chairman of the Central Military Commission Li Xiannian Chairman of the Conference National Committee Wan Li Chairman of the Congress Standing Committee Wang Zhen Vice President of the People's Republic of China Jiang Zemin Communist Party Shanghai Municipal Secretary Li Ximing Communist Party Beijing Municipal Secretary Zhu Rongji Mayor of Shanghai Chen Xitong Mayor of Beijing Hu Jintao Communist Party Tibet Regional Secretary Wen Jiabao Chief of the General Office of the Communist Party of China Bold text indicates membership in the Politburo Standing Committee Italics text indicates Great Eminent Officials

paragraph_text: A theoretical physicist by training, he studied at the University of Science and Technology of China and entered the PhD program (1986–1989) in Astrophysics at the University of Notre Dame. He became a full-time human rights activist after the Tiananmen Massacre in 1989. Xiao was the Executive Director of the New York-based NGO Human Rights in China from 1991 to 2002 and vice-chairman of the steering committee of the World Movement for Democracy.

Question: Who is the son of the national leader during the Tiananmen Square protests of 1989 in the country where the person who described the process of evaporation lived?
Answer: Deng Pufang